Patent published and filed                       

1.      Solar cell and photoelectric conversion element- Ganganagunta Srinivas, Amit Kumar Sharma, Mr. H. R. Pratheep,  Dr Prakash A Bhadane,. Dr. S. Anna Venus, Dr. Pratik Rajan Mungekar,. Mr. Sk. Abdul Mathin, Dr. Vijaya Lakshmi Atla, Mr. Srinivasa Reddy Bireddy, Subhasis Roy, G. Adilakshmi Filling no 202211008791,  Filing date: 19th Feb 2022 (Published)

2.      Nano fabrication of  Nanoparticles to solar cells for maximum absorption of solar energy, abina shiny r s, sudeshna surabhi, kumar anurag, subhasis roy, raj kumar, mr. sanjay laxmanrao gaikwad, rajeev raghuvanshi, b.sai venkata krishna,vaddi ramesh, ajay kumar sharma,. b.balaji, berlin beno t l, Filling no -202241013686, 14th Martch, 2022 (Published).

3.      Cost Effective Solar Panels with Photovoltaic Cells Coated with Nanoparticles-sanjay laxmanrao gaikwad, sheerin masroor, yogendra rathore, subhasis roy, srinivas reddy golkonda, sanjay kumar upadhyay, deeptiraj pant, ramswaroop singh thakur, ranjit kumar puse, dharmbir singh,s. saravanan, saroj shankar hole, Filling no -202221013684, 14th Martch, 2022 (Published).

4.  Self-nanoemulsifying oily formulation process for the poorly water-soluble drugs and method- Filling no: 202241007604, P. Jacquline Rosy, Anand Raj, Rabinarayan Parhi, A. Jyothi, Pydi Swetha, Anusha Kusuma, Iizhar Ahmed Syed, Niraj Gupta, Subhasis Roy, Sanjaykumar Kuna,Venugopal Muralidharan, 14th Feb, 2022 (Published)

5.  Intelligent management system for the secure connection of several mobile payment applications against security vulnerabilities, Holderilnhaberin: Amutha, Sivasankar Gandhi, Vadalur, Tamil Nadu, Anand, Rohit, Panipat, Haryana, Avhankar, Madhavi Satish, Pune, Maharashtra, Islam, Saiful, Abha, Majalekar, Snehankrta, Pune, Maharashtra, Pawar, Janardan Adinath,  Roy, Subhasis, Sabeer, Shaista, Aligarh, Satpathy, Rabinarayan, Bhubaneswar, Odisha, Singaram, Lima, Rr., Coimbatore, Tamil Nadu, Singh, Harinder, Distt. Sangrur, Punjab, Suryavanshi, Mahendra Narayan, Tai, Federal Republic of Germany , Deed , On registration of utility model No 20 2022 101 783, ,IPC: GO6F 21/31, Date of registration: 02.04_2022 ,Date of registration: 11_04 202., The President of the German Patent and Trademark Office ,  Cornelia Rudloff-Schaffer Munchen, April 11, 2022

6.      A comparative study to analyze the  impact of nanomaterials and their energy delivery to the solar panels, 202241014156, n.tamilarasan, s. kalaiselvan, pravat kumar swain, abhiruchi passi, amrut s. lanje, sanjay laxmanrao gaikwad, subhasis roy, sumalatha phirangi, dharmbir singh, r.rajarajan, s. saravanan, s. velayutham  Filing date: 2022 (Published)

7.  A novel oxidized carbon nanosphere / carbon nanofoam composite material as an efficient filter for mainstream cigarette smoke, Maitra, S., Roy, S. (Filling no: 201931037368, 17/09/2019) (Filed)

8.      Designing a smart charging plug in cables for laptops,  Vishwanath Patil, Sanjeev,Janawade, Subhasis Roy, Pavankumar Ravindra Sonawane Patent Design No.372032-001 date of issue 27/01/2023 (Design granted)

9.  Design of an automated traffic management system with sensors to predict the occurrence of disasters and alert the drivers on Highway ,  d. kalpanadevi, pramod belkhode, tarun ,anodia, mohd esa, a.sasi kumar, gauri kalnoor, subhasis roy, shyamali das, Filling no: 202241073283,17th Dec 2022) (Published)

10.  Novel system and method for generating hydrogen by electrolysis of water from a green power source Application Number: 202341009151, B. Ramachandra, N. Sarath Babu, C. Sreedhar, Ch. Giridhar, Shailendra Kumar Mittal, Mangali Madhu Sekhar, V.Nagalakshmi, P. Sesi Kiran, Badapalli Pradeep Kumar, Boya Nakkala Anusha, Subhasis Roy, Filling no: 202241073283,11th Feb 2023)  (Published)

11.  Utilisation of  Photovoltaic powered wireless tags in Flexible Perovskites to support the Smart IoT world, application no 202311011179 , Jaidev Kumar, Sanjeev Kumar, Kishor Babanrao Raulkar, E Hemalatha, Sandeep Srivastava, Subhasis Roy, Prof Ravi Mohan, Leka K K, Brijesh Kumar Pandey, Mohd Asif Shah, Vijay Kumar Salvia, Pravat Kumar Swain, Publication Date : 18th March, 023 (Published)

12.  AI-based solar-powered bathroom, shower, Uma Yadav , Amol Dhakne, Prajna K B,  Roy, S.  Filling no: 379607-001 date 19/02/ 2023, design registration no 379607-001, 18th Feb, 2023

13.  Plastic waste management device , Rajeswari Nagamalai, Asheesh Pandey, Niharika Singh, Santhosh Kumar Balan, Subhasis Roy, Sushanta Kumar Sahu, Sevakram Tanaji Kumbhare , UK Design Patent, Design application number 6304627, Grant date: 20 September 2023 Registration date: 21 August 2023, International Design Classification: Version: 14-2023.

14.  “Sleek Nanoemulsion Production Apparatus” Certificate of Registration for a UK Design,  Mr. Imran Khan, Dr. Bajirao Bhila Ahire, Dr. Subhasis Roy, Kola Abraham, Emmanuel, Dr. Maddikera Kalyan Chakravarthi, Dr. Manchala Kalyana Raju, Design number: 6350174,Grant date: 21 March 2024, Registration date: 01 March 2024.

15.  A novel catalytic process for enhancing biofuel production, –South Africa Patent,  Application Number-  21/01/2023/07559  ,  Filing Date- 01/08/2023, Dr. Kashmiri Ashish Khamkar; (2) Dr. S. Mani Naidu; Dr. Shobha Thakur; Dr. Bhimraj Gawade;Dr. V. Nagalakshmi;  Dr. Obaiah Jamakala;  Dr. Nellore Manoj Kumar; Dr. Dhondiram Tukaram, Sakhare; Dr. Subhasis Roy, International classification 51 C07K  Acceptance date, 29 January 2024 Grant date 28th of Feb, 2024

16.  Utilisation of  Photovoltaic powered wireless tags in Flexible Perovskites to support the Smart IoT world, application no 202311011179 A, Publication Date : 17/03/2023 (Published)

17.  AI-based solar-powered bathroom shower (Filling no: 379607-001 date 19/02/ 2023) Examination Report has been Generated ,Online Reply Document Recived(FER generated on 28/04/2023)], Design No. : 379607-001, Serial No. : 154492 Grant date - 19/01/2024

18.   UK Design Patent with Grant Title: Plastic waste management device ,  Design application number 6304627, Grant date: 20 September 2023, Registration date: 21 August 2023, International Design Classification: Version: 14-2023 Class: 15 MACHINES, Subclass: 99 Miscellaneous

19.  “Sleek Nanoemulsion Production Apparatus” Certificate of Registration for a UK Design,  Mr. Imran Khan, Dr. Bajirao Bhila Ahire, Dr. Subhasis Roy, Kola Abraham, Emmanuel, Dr. Maddikera Kalyan Chakravarthi, Dr. Manchala Kalyana Raju, Design number: 6350174,Grant date: 21 March 2024, Registration date: 01 March 2024.

20.  Indian Design Patent with Grant certificate, Smart Blood Pressure Monitoring Device, Application Number: 409655-001 Cbr Number: 203727 Cbr Date: 07/03/2024 ,Applicant Name: 1. Dr Rugada Vaikunta Rao 2. Annam SREENIVASULU 3. Dilip Ramkrishna Rangari 4. Dr. Subhasis Roy 5. Gnane Swarnadh Satapathi,  Compact Core-Shell Nanoparticle Synthesis Device, Dr. Ashish Verma, Dr. Ajai Singh Yadav, Dr. Shreni Diwakar, Mr. Dipankar Gogoi, Dr. Subhasis Roy , UK Design GRANT/REGISTRATION  Application Number- 6374049, Filing Date-26/06/2024 , Design number: 6374049, Grant date: 02 July 2024. Registration date: 26 June 2024

23.  Design of a Solar-Powered Air-to-Water Converter for Drinking Water Generation UK Design GRANT/REGISTRATION, Dr. Srilatha Yallapragada, Dr. Revathi Naidu, Mrs. Asha Rani Badakegudlu Muniyappa, Dr. Nandkumar Popatrao Dharmadhikari, Dr. Subhasis Roy, Dr. Chalicheemala Sreedhar, Design Number : 6377554,  Grant date: 31 Jul 2024, Grant date: 31 July 2024,Registration date: 10 July 2024, Publication date: 01 Aug 2024

25.  Indian copyright Patent-Method for the Synthesis and Characterization of Carbon Nanotubes for Advanced Electronics Applications, DIARY Number- 25466/2024-CO/L, Filing Date-12/08/2024

26. Multilayer Nanostructured Titanium Dioxide, Silicon Dioxide, Alumina, and Silicon Nitride Coatings for Enhanced Solar Cell Performance (under process).Application Number: 202541028844, Filing Date-26/03/2025

27. Indian DESIGN Grant/Registration, Lowest price ever GRANT/REGISTRATION Certificate, Nanotechnology-Enhanced Solar Energy Conversion Device (under process)Application Number: 454409-001, Filing Date-06/04/2025

As on 21st September, 2024, total number of citations: 2083   , H-index: 24, i10-index: 47 (according to google scholar)

https://scholar.google.com/citations?user=QDhy91YAAAAJ&hl=en

LIST OF PUBLICATIONS AND PRESENTATIONS                                                                                                                    

  Peer Reviewed Journal:Peer-Reviewed Journal:

2025

(1) Jyoti Bhattacharjee, Subhasis Roy, Abdul Aziz Shaikh, Artificial Intelligence and Machine Learning for the Optimization of Photocatalytic Performance, Energy 360, elsevier 2025,100027, ISSN 2950-4872, https://doi.org/10.1016/j.energ.2025.100027

(2) Jyoti Bhattacharjee, Subhasis Roy, Abdul Aziz Shaikh, Preetam Datta, Efficient fabrication and characterization of doped nanocomposites for thermoelectric materials, Nano Trends, Volume 10, 2025, 100109, ISSN 2666-9781,https://doi.org/10.1016/j.nwnano.2025.100109.

(3) Aspects of Energy Efficiency and Execution of Modern Technologies for Achieving Net Zero, Debdutta Mandal, Subhasis Roy, Jyoti Bhattacharjee, Debarati Mitra, Graduate Journal of Interdisciplinary Research, Reports & Reviews, Vol. 02, No.03 (2024), pp.150-163, https://doi.org/10.5281/zenodo.15087049,

(4)     Jyoti Bhattacharjee, Subhasis Roy, A comprehensive review on integrated photo rechargeable batteries- supercapacitors, and their techno-economic feasibility, Journal of Photochemistry and Photobiology, Elsevier,  Volume 25, 2025, 100257, ISSN 2666-4690, https://doi.org/10.1016/j.jpap.2024.100257.

(5)     Jyoti Bhattacharjee, Subhasis Roy, Advanced Techniques Using Ionic Liquids for Efficient Separation of Sugar Alcohols. Innov Discov, 2025; 2(1): 3. DOI: 10.53964/id.2025003.

2024

(6)     Bhakta, D., Gayen, D., Bhattacharjee, J., Chatterjee, R., Dastidar, P., & , Subhasis Roy (2024). Repurposing Industrial and Agricultural Wastes as Sustainable Alternatives in Photovoltaic Cells and Dye Degradation. In ChemistrySelect (Vol. 9, Issue 38). Wiley. https://doi.org/10.1002/slct.202403145 (IF 2.1)

(7)     Contemporary approaches to enhancing the efficiency of ionic liquids in the separation of sugar alcohols", In Innovation Discovery. Innovation Forever Publishing Group Limited.

(8)     Bhattacharjee, J., & Subhasis Roy (2024). Fine Chemical Engineering, "Molybdenum Oxide in Electrochromic Devices: Innovations, Applications, and Market Potential (accepted)

(9)     Synthesis of Thermoelectric Nanocomposites by Incorporating Reduced Graphene Oxide, Archives of Advanced Engineering, 2024, pp 1–11 DOI: 10.47852/bonviewAAES42023514, Jyoti Bhattacharjee and Subhasis Roy

(10) Bhattacharjee, J., & Subhasis Roy (2024). Synergistic insights: electro-organic photocatalysis and nanostructures. In Chemical Papers (Vol. 78, Issue 15, pp. 8077–8105). Springer Science and Business Media LLC. https://doi.org/10.1007/s11696-024-03657-2

(11) Jyoti Bhattacharjee, Subhasis Roy, Nature-Inspired Catalysts: A New Era for Water-Splitting Technology, Material Science Research India ISSN: 0973-3469, Vol.21, No.(2) 2024, https://doi.org/10.13005/msri/210201

(12) Bhattacharjee, J., & Subhasis Roy (2024). A review on photocatalysis and nanocatalysts for advanced organic synthesis. In Hybrid Advances (Vol. 6, p. 100268). Elsevier BV. https://doi.org/10.1016/j.hybadv.2024.100268

(13) Jyoti Bhattacharjee, Subhasis Roy, Exploration of Molybdenum Oxide Compounds-A Review. Catalysis Research 2024; 4(3): 011; doi:10.21926/cr.2403011.

(14) Jyoti Bhattacharjee, Subhasis Roy (2024) Understanding Global Climatic Shifts- A Comprehensive Review. Journal of Chemistry & its Applications. Volume 3(4): 1-11, DOI: doi.org/10.47363/JCIA/2024(3)133. ISSN: 2754-6675 (IF 0.35)

(15) Density Functional Waltz: Molecular Theory of Spin Dynamics, Jyoti Bhattacharjee and Subhasis Roy, Journal of Physics & Optics Sciences, SRC/JPSOS/293.Scientific Research and Community, Volume 6(3): 1-4, 2024, DOI: doi.org/10.47363/JPSOS/2024(6)242

(16) A review on environmental impacts of renewable energy for sustainable development, Debabrata Gayen Rusha Chatterjee, Subhasis Roy, International Journal of Environmental Science and Technology, (2024) 21:5285–5310. (IF 3.519)

(17) Biopolymer-based nanocomposites for application in biomedicine: a review, Abdul Aziz Shaikh, Preetam Datta, Prithwish Dastidar, Arkadip Majumder, Maharghya Dyuti Das, Pratikrit Manna, Subhasis Roy, Journal of Polymer Engineering. (IF 2). https://doi.org/10.1515/polyeng-2023-0166

(18) Review on green resources and AI for biogenic solar power. Energy Storage and Conversion, Bhattacharjee, J., & , Subhasis Roy (2024).  2(1). https://doi.org/10.59400/esc.v2i1.457

(19) Smart materials for sustainable energy, Jyoti Bhattacharjee, Subhasis Roy, Natural Resources Conservation and Research 2024, 7(1), 5536.https://doi.org/10.24294/nrcr.v7i1.5536.

 2023

(20)  A Potential Roadmap on the Development, Application, and Loopholes of Metal-Organic Frameworks in High-Performance Third-Generation Solar Cells, Swastik Paul, Shibsankar Mondal, Souhardya Bera, Ankit Saha, Ridipt Mishra, Arkadip Majumder, Milan Mondal, Subhasis Roy, Chemistry of Inorganic Materials, Volume 1, December 2023, 100024. Elsevier

(21)  Biopolymer-based nanocomposites for application in biomedicine: a review, Abdul Aziz Shaikh, PreetamDatta, Prithwish Dastidar, Arkadip Majumder, Maharghya Dyuti Das, Pratikrit Manna, Subhasis Roy, Journal of Polymer Engineering ISSN: 2191-0340 (accepted ). (IF 1.624).

(22) A review on environmental impacts of renewable energy for sustainable development, Debabrata Gayen Rusha Chatterjee, Subhasis Roy, International Journal of Environmental Science and Technology, https://doi.org/10.1007/s13762-023-05380-z. (IF 3.519)

(23) HPMC-mediated ZnCl2 doping possible substitution of Pb2+ for environment-friendly halide perovskite solar cell fabrication" by Shyamal Datta, Mouli Mitra, Subhasis Roy, ECS Journal of Solid State Science and Technology, 2023, Vol. 12, Issue 10, p. 10500510. (IF 2.070).

(24) Synthesis, characterization, and density functional theory calculation studies of a novel Rb-based lead halide perovskite material, Swastik Paul, Shibsankar Mondal, Souhardya Bera, Ankit Saha, Ridipt Mishra, Arkadip Majumder, Milan Kumar Mandal, Subhasis Roy, Chemistry of Inorganic Materials, Elsevier. 2023, Volume 1, 100015,

(25) Roadmap on the development of 2D nanomaterials for preparation of efficient photocatalysts, Suchismita Mondal, Souhardya Bera, Subhasis Roy, Materials Science in Semiconductor Processing, Volume 168, 2023, 107834 (IF 4.62).

(26) Morphological tuning and defect-free lead halide perovskite by surface passivation for solar cell fabrication, Shyamal Datta, Mouli Mitra, Subhasis Roy, Ionics, Spinger, volume 29, pages, 4397–4405 , 2023, DOI 10.1007/s11581-023-05116-6 (IF 2.39).

(27) Photocatalysis for Water and Wastewater Treatment Authors: Preetam Datta, Subhasis Roy, Catalysis Research 2023; 3(3): 020;doi:10.21926/cr.2303020.

(28) Bi-functional Cu-TiO2/CuO photocatalyst for large scale one-shot synergistic treatment of waste sewage containing organic and heavy metal ions, Yang Ding, Soumyajit Maitra , Chunhua Wang , Runtian Zheng , Tarek Barakat, Subhasis Roy , Li-Hua Chen, Bao-Lian Su, Science Science China Materials volume 66, pages179–192 (2023) (IF 8.273)

(29)  A Comprehensive Review on Third-Generation Photovoltaic Technologies, Arko De , Jyoti Bhattacharjee, Sahana R. Chowdhury and Subhasis Roy, Journal of Chemical Engineering Research Updates, 2023, 1-17.

(30) Bhattacharjee J, , Subhasis Roy, Utilizing a Variable Material Approach to Combat Climate Change. Mat. Sci. Res. India;20(3).2023, ISSN: 0973-3469. http://dx.doi.org/10.13005/msri/200301

2022

(31) Selective photo-reduction of CO2 to methanol using Cu doped 1D-Bi2S3/rGO nanocomposite under visible light irradiation.   Arindam Mandal,  Soumyajit Maitra,  Subhasis Roy,  Baisakhi Hazra, Koustuv           Ray                                     and                                     Kajari                 Kargupta, New J. Chem., 2022 (IF 3.6)

(32) Synthesis and characterization of Inorganic Nanoparticles Luminophores for Environmental Remediation, Abdul Aziz Shaikh, Souhardya Bera, Swastik Paul, Shibsankar Mondal, Ankit Saha and Subhasis Roy, 4open Special issue Inorganic Nanoparticle Luminophore: Design and Application, 4open 5(19) Number of pp 7, 2022 (https://doi.org/10.1051/fopen/2022021).

(33)  “Unveiling the electro-catalytic activity of crystal facet tailored Cobalt Oxide-rGO hetero-structure towards selective reduction of CO2 to ethanol" Saha, Suparna; Maitra, Soumyajit; Chattopadhyaya, Mausumi; Sarkar, Arundhati; Haque, Suhail; Roy, Subhasis; Kargupta, Kajari, ACS Applied Nano Materials, 5, 8, 10369–10382 2022. (IF 5.097)

(34) A Mini Review of Flexible Polymer Solar Cell with Higher Conversion Efficiency, Monoj Ghosh and Subhasis Roy Polymer Sci peer Rev J. 4(3). PSPRJ. 000587. 2022. DOI: 10.31031/PSPRJ.2022.04.000587

(35) Three-dimensionally ordered macroporous materials for photo/electrocatalytic sustainable energy conversion, solar cell and energy storage" Yang Ding, Chunhua Wang, Runtian Zhenga. Soumyajit Maitra, Genwei Zhang, Tarek Barakat, Subhasis Roy, Bao-Lian Su, Li-HuaChen, EnergyChem. Elsevier, 4, 4 , 100081, 2022 (IF 31.9) https://doi.org/10.1016/j.enchem.2022.100081

(36) Review on defect engineering of perovskite in photovoltaic application, Souhardya Bera , Ankit Saha , Shibsankar Mondal , Arnab Biswas , Shreyasi Mallick , Rupam Chatterjee , Subhasis Roy, Materials Advances, RSC, 2022, 3, 5234–5247, DOI: 10.1039/D2MA00194B,

(37) Redefining the role of microalgae in industrial wastewater remediation, Shibsankar Mondal, Souhardya Bera, Ridipt Mishra, Subhasis Roy, Energy Nexus Volume 6, 100088, 2022. https://doi.org/10.1016/j.nexus.2022.100088

(38) Ratiometric pH Sensing, Photophysics, and Cell Imaging of Nonaromatic Light-Emitting Polymers , Joy Sankar Deb Roy, Deepak Chowdhury, MD Hussain Sanfui, Nadira Hassan, Manas Mahapatra, Narendra Nath Ghosh, Swapan Majumdar, Pijush Kanti Chattopadhyay, Subhasis Roy, and Nayan Ranjan Singha, ACS Appl. Bio Mater. 2022, 5, 6, 2990–3005, https://doi.org/10.1021/acsabm.2c00297 (IF 3.25)

(39)  Emerging semiconductors and metal-organic compounds related photocatalysts for sustainable hydrogen peroxide production, Yang Ding, Soumyajit Maitra, Daniel Arenas Esteban, Sara Bals, Henk Vrielinck, , Subhasis Roy , Tarek Barakat , 2022, Matter- cell press Volume 5, Issue 7, 6 July 2022, Pages 2119-2167.(IF 19.6)

(40) Photochemical production of hydrogen peroxide by digging pro-superoxide radical carbon vacancies in porous carbon nitride Yang Ding, Soumyajit Maitra, Daniel Arenas Esteban, Sara Bals, Henk Vrielinck, Tarek Barakat, Subhasis Roy, Gustaaf Van Tendeloo, Jing Liu, Yu Li, Alexandru Vlad, and Bao-Lian, Cell Reports Physical Science 2022. 100874. DOI: 10.1016/j.xcrp.2022.100874. (IF 9.423)

(41) Vacancy defect engineering in semiconductors for solar light driven environmental remediation and sustainable energy production, Journal: Interdisciplinary Materials, Yang Ding, Soumyajit Maitra, Chunhua Wang, Somoprova Halder, Runtian Zheng, Tarek Barakat, Subhasis Roy, Li-Hua Chen and Bao-Lian Su, Interdisciplinary Materials. 2022;1–43., DOI: 10.1002/idm2.12025.

(42) Light-Emitting Redox Polymers for Sensing and Removal-Reduction of Cu(II): Roles of Hydrogen Bonding in Nonconventional Fluorescence Joy Sankar Deb Roy, Mousumi Deb, MD Hussain Sanfui, Shrestha Roy, Arnab Dutta, Pijush Kanti Chattopadhyay, Narendra Nath Ghosh, Subhasis Roy, and Nayan Ranjan Singha: ACS Appl. Polym. Mater. 2022, 4, 3, 1643–1656 (IF 4.089)

(43) Hydrophilic bi-functional B-doped g-C3N4 hierarchical architecture for excellent photocatalytic H2O2 production and photoelectrochemical water splitting, Yang Ding, Soumyajit Maitra, Chunhua Wang, Runtian Zheng, Meiyu Zhang, Tarek Barakat, Subhasis Roy, Jing Liu, Yu Li, Tawfique Hasan, Bao-Lian Su, Journal of Energy Chemistry 70 (2022) 236–247, ISSN 2095-4956 (IF 9.676)

(44)  A review on Z/S – scheme heterojunction for photocatalytic applications based on metal halide perovskitematerial, Applied Surface Science Advances , Ridipt Mishra, Souhardya Bera, Rupam Chatterjee, Saptaparna Banerjee, Satarupa Bhattacharya, Arnab Biswas, Shreyasi Mallick, Subhasis Roy Volume 9, June 2022, 100241

2021

(45) Swastik Paul, Souhardya Bera, Rishav Dasgupta, Shibsankar Mondal, Subhasis Roy, Review on the recent structural advances in open and closed systems for carbon capture through algae, Energy Nexus,Volume 4,2021, 100032,ISSN 2772-4271.

(46) “Simulated Performance Studies of Thin Film Perovskite Solar Cell”. Shyamal Datta & Subhasis  Roy , Journal of The Institution of Engineers (India): Series C vol. 103, pp.189–195 (2021) (IF 1.676).

(47) “Solvothermal Etching-Assisted Phase and Morphology Tailoring in Highly Porous CuFe2O4 Nanoflake Photocathodes for Solar Water Splitting”, Soumyajit Maitra, Subhan Pal, Toulik Maitra, Somoprova Halder, and Subhasis Roy, Energy & Fuels, ACS, Vol 35 (17), pp 14087-14100, 2021 (IF 3.421).

(48) “Solvothermal Phase Change Induced Morphology Transformation in CdS / CoFe2O4 @ Fe2O3 Hierarchial Nanosphere Arrays as Ternary Heterojunction Photoanodes for Solar Water Splitting”, Soumyajit Maitra, Arundhati Sarkar, Toulik Maitra, Somoprova Halder, Kajari Kargupta and Subhasis Roy , New Journal of Chemistry - RSc, Vol.45, pp12721, 2021 (IF 3.591).

(49) “Superior light absorbing CdS/vanadium sulphide nanowalls@TiO2 nanorod ternary heterojunction photoanodes for solar water splitting” , Soumyajit Maitra,, Somoprova Halder, Toulik Maitra, Subhasis Roy, New Journal of Chemistry, RSc, Vol 45 (16), 7353-7367, 2021. (IF 3.591).

(50) “Research on dye sensitized solar cell: A review highlighting the progress in India”, Journal of Physics: Energy, , K. Mukherjee S. Bera , D. Sengupta, Subhasis Roy, Journal of Physics: Energy, IOP science Volume 3, Number 3 pp 032013, 2021. (IF 7.528)

(51) “Blending of Dielectric Perovskite with Electron Transport Materials: A Case Study towards Improving Bio-Molecular Devices for Energy Harvest”, K. Mukherjee, Subhasis Roy, Argha Dey, Shyamal Datta, Sk. Abdul Moyez, Abhijit Kamila, ECS Journal of Solid State Science and Technology, Vol 10 (1), 013003, 2021. (IF 2.142)

(52) Soumyajit Maitra, Subhan Pal, Shyamal Datta, Toulik Maitra, Biswadeep Dutta, Subhasis Roy, Nickel doped molybdenum oxide thin film counter electrodes as a low-cost replacement for platinum in dye sensitized solar cells, Materials Today: Proceedings,Volume 39, Part 5,2021,Pages 1856-1861. (IF 1.24)

2020

(53)         

Enhanced performance of dye-sensitized solar cell with thermally stable natural dye-assisted

    TiO2/MnO2 bilayer-assembled photoanode, Shyamal Datta. Argha Dey. Nayan Ranjan Singha, Subhasis Roy , Materials for Renewable and Sustainable Energy, Springer Volume 9, pp. 25, 2020 (IF2.98)

(54) "Structural features and optical properties of CH3NH3Pb(1-x)SnxCl3 thin-film perovskites for photovoltaic applications" Sk Abdul Moyez, Soumyajit Maitra, Kalisadhan Mukherjee, Abhinanda Sengupta and Subhasis Roy, Journal of Electronic Materials, Springer, Vol. 49, No. 12, pp. 7133, 2020 (IF 1.938)

(55) “Fluorescent Guar Gum-g-Terpolymer via In Situ Acrylamido-Acid Fluorophore-Monomer in Cell-Imaging,                                             Pb(II)-Sensor, and Security-Ink.” Madhushree Mitra; Manas Mahapatra; Arnab Dutta; Mousumi Deb; Sayanta Dutta; Pijush Chattopadhyay; Subhasis Roy; Snehasis Banerjee; Parames C Sil; Nayan Ranjan Singha, ACS Applied Bio Materials, Vol.3, No. 4, pp.1995–2006, 2020 (IF 3.25).

(56) “Cadmium Sulphide Sensitized Crystal Facet Tailored Nanostructured Nickel Ferrite@ Hematite Core-Shell Ternary Heterojunction Photoanode for Photoelectrochemical Water Splitting”, Soumyajit Maitra, Arundhati Sarkar, Toulik Maitra, Somoprova Halder, Subhasis Roy, Kajari Kargupta, MRS Advances, RSC Volume 5, Issue 50 (Energy, Storage and Conversion), pp. 2585-2593. 2020.

(57) “A Review on Perovskite Nanostructure for Renewable Energy Applications in Recent Advances”, Subhasis Roy, International Journal of Applied Nanotechnology, ISSN: 2455-8524, Vol. 6: Issue 2, 2020. (DOI: 10.37628/ijan.v6i2.720)

(58) “Applications of Polymers in Perovskite Solar Cells: A Review”, Annals of Chemical Science Research, Subhasis Roy and Shyamal Datta, Vol. 2 (2) 2020.( DOI: 10.31031/ACSR.2020.02.000531)

(59) “A mini review of recent strategies towards stable nanostructure perovskite solar cell fabrication”, Shyamal Datta and Subhasis Roy, International Journal of Engineering and Management Research, Vol. 9(12):430,2020.

2019

(60) “Improved Photoresponse in Association with a Synthesized Dielectric Material for Quantum Dots Solar Cells”, Subhasis Roy, Argha Dey, B.C.Das, Material Science Research India, Vol. 16(3), pp. 230-234 (2019)

2018

(61) “Dual-Step Thermal Engineering Technique: A New Approach for Fabrication of Efficient CH3NH3PbI3-Based Perovskite Solar Cell in Open Air Condition”, Solar Energy Materials and Solar Cells, Elsevier, Sk. Abdul Moyez , Subhasis Roy, Vol.185, pp. 145-152, 2018 (IF 7.267).

(62) Perovskite solar cell for photocatalysis water splitting with TiO2/ Co- doped hematite electron transport bilayer, Subhasis Roy and G. Botte RSC advance, Vol 8, 5388-5394, 2018. (IF 3.24).

(63) Efficient solid state dye sensitized solar cell based on tricationic ionic crystal pyridinuim- imidazolium electrolytes, Rohit L.Vekariya, Abhishek Dhar, Nadavala Siva Kumar, Rumpa Pal, Subhasis Roy, Organic Electronics, Vol. 56, 2018, pp. 260–267 (IF 3.39).

(64) Fabrication and Study of Structural, Optical Features of Nano Structured, Photo- Harvesting Organo-Lead Halide-Based Perovskite Solar Cell Abhishek Dhar , Rohit L. Vekariya , Argha Dey , Subhasis Roy, Preprints (2018), 2018040174, doi: 10.20944/preprints201804.0174.v1.

(65) Fabrication and characterization of next-generation nano- structured organo-lead halide-based perovskite solar cell, Abhishek Dhar, Argha Dey, Pradip Maiti, Pabitra Kumar Paul, Subhasis Roy, Sharmistha Paul, Rohit L. Vekariya, Ionics, 24, pp. 1227–1233, 2018. DOI 10.1007/s11581-017- 2256-x (IF 2.39).

(66) Influence of tagging thiophene bridge unit on optical and electrochemical properties of coumarin based dyes for DSSCs with theoretical insight, Abhishek Dhara , Nadavala Siva Kumar , Pabitra Kumar Paul , Subhasis Roy , Rohit L. Vekariyae, Organic Electronics Vol. 53, pp. 280–28, 2018 (IF 3.72)

(67) Synthesis of Colloidal Silver Nanoparticles by Reducing Aqueous AgNO3 Using Green Reducing Agents, S. K. Panda, S. Sen, Subhasis Roy, A. Moyez, Materials Today: Proceedings, Elsevier, Vol. 5, Issue 3, pp. 10054-10061, 2018 (IF 1.24)

(68) Thermal engineering of lead free nanostructured MASnCl3 perovskite material for thin film solar cell , Sk Abdul Moyez, Subhasis Roy, Journal of Nanoparticle Research, Spinger, Vol. 20, Issue 5, pp.1-13, 2018 (IF 2.13).

(69) An overview of engineered porous material for energy applications: a mini-review, Rohit L.Vekariya, Abhishek Dhar, Pabitra Kumar Paul, Subhasis Roy, Ionics, Springer, 24, pp. 1–17, 2018. (IF 2.39).

2017

(70) Enhanced Charge Carrier Generation by Dielectric Nanomaterials for Quantum Dots Solar Cells Based on CdS-TiO2 Photoanode, Argha Dey, Poulami karan, Abhinanda Sengupta , Sk. Abdul Moyez, Subhasish Basu Majumderb , Debabrata Pradhan, Subhasis Roy, Solar Energy, Elsevier, Vol.158, pp. 83-88, 2017. (IF 5.74)

(71) Experimental Investigation of Photocatalytic and Photovoltaic activity of Titania/Rice Husk Crystalline Nano-Silica Hybrid Composite, Sk. Abdul Moyez, Argha Dey, Sudip Kumar Das, Subhasis Roy, Solar Energy Materials and Solar Cells, Elsevier, Vol. 172, pp 93-98, 2017. (IF 6.98).

(72) Synthesis of high throughput multiferroic nanocomposite using sol-gel process, Subhasis Roy,

     International Journal of Engineering and Management Research, Vol.7, No. 4, pp. 151-154, 2017.

(73) "Fabrication of Environmental Friendly Perovskite Solar Cells by Partial Replacemnet of Lead with Tin," Sk Abdul Moyez, Abhinanda Sengupta, Asit Baran Biswas, Subhasis Roy, Argha Dey, Bhaskar Chandra Das Invertis Journal of Renewable Energy, Vol. 7, No. 2, pp. 59-63, 2017.

(74) “Nano- structured superacidic sulfated zirconium oxide catalyst: synthesis, characterization and application in one-pot isomerisation of n-alkanes predicting their reaction-kinetics”, Abhishek Dhar, Abhishek Dutta, Pushan Sharma, Poulomi Sarkar, Subhasis Roy, in the special issue 'Energy and Environment Focus', American Scientific Publishers, Vol. 6, pp. 1–8, 2017.

(75) “Tailoring the surface morphology with annealing temperature of the lead free perovskite solar cell, CH3NH3SnCl3 and its relation to the cell performance”, Sk Abdul Moyez, Subhasis Roy, Asit Baran Biswas Materials Today: Proceedings , Elsevier, Vol. 4, Issue 14, , pp.12657–12660, 2017 (IF 1.25)

(76) “Combined Organic- Perovskite Solar Cell Fabrication as conventional Energy substitute”, Argha Dey, Abhishek Dhar, Subhasis Roy, Bhaskar Chandra Das,“Materials Today: Proceedings , Elsevier, Vol. 4, Issue 14, 2017, pp.12651–12656 (IF 1.25)

(77) “Graphene Co-Doped TiO2 Nanocomposites for Photocatalysis and Photovoltaics Applications”, Argha Dey, Poulomi Sarkar, Sk. Abdul Moyez, Subhasis Roy, Abhishek Dhar, Asit Baran Biswas, Bhaskar Chandra Das, Indian Journal of Science and Technology, Vol. 10 Issue 31, 2017. (IF 0.68).

(78) “Synthesis and characterization of solid-phase super acid catalysts and their application for isomerization of n-alkanes”, A Dhar, A Dutta, P Sharma, B Panda, Subhasis Roy, Chemical Engineering Communications, Elsevier, Vol. 204, Issue 12, 2017, pp.1341-1356 (IF 2.49).

2016

(79) “Fabrication of solar cell using extracted biomolecules from tea leaves and hybrid perovskites”, Argha Dey, Sk. Abdul Moyez, Milan Kumar Mandal, Subhasis Roy, Materials Today: Proceedings , Elsevier, Vol. 3, pp. 3498–3504, 2016 (IF 1.25)

(80) "A Review of the Multiple Exciton Generation in Photovoltaics" Sk.Abdul Moyez, Abhishek Dhar, Poulomi Sarkar, Hyun Suk Jung, Subhasis Roy, in the special issue Reviews in Advanced Sciences and Engineering, American Scientific Publishers, Vol. 5, No.1, pp. 1-14, 2016

2015

(81) "Low temperature synthesis of rutile TiO2 nanocrystals and their photovoltaicand photocatalytic  properties", Subhasis Roy, Gill Sang Han, Hyun Jung Shin, Jin Wook Lee, Jin Soo Mun, Hyun Ho Shin and Hyun Suk Jung Journal  of Nanoscience and Nanotechnology, American Scientific Publishers Vol. 15, pp. 4416-4521, 2015. (IF 1.55)

2013

(82) “A Simple Method to Control Morphology of Hydroxyapatite Nano- and Microcrystals by Altering Phase Transition Route”, Gill Sang Han, Sangwook Lee, Dong Wook Kim, Dong Hoe Kim, Jun Hong Noh, Jong Hun Park, Subhasis Roy, Tae Kyu Ahn, Hyun Suk Jung, ACS, Crystal Growth & Design, Vol.13, No. 8, pp. 3414, 2013. (IF 4.055)

2012

(83) “Recent advances in multiferroic thin films and composites” Subhasis Roy, and S.B. Majumder

Journal of Alloys and Compounds, Elsevier, Vol. 538, pp. 153–159, 2012. (IF 5.31)

(84)  “Optical Characteristic of Sol-Gel Synthesized Lead Lanthanum Titanate-Cobalt Iron Oxide Multiferroic Composite Thin Film”, Subhasis Roy, and S.B. Majumder, Journal of Applied Physics, AIP Publishers, Vol. 112, pp. 043520-043528, 2012. (IF 2.75).

(85) “Analyses of the Leakage Current Characteristics of Lead Lanthanum Titanate-Cobalt Iron Oxide Multiferroic Composite Thin Film, Subhasis Roy, and S.B. Majumder, ECS Journal of Solid State Science and Technology, Vol. 1, pp. N19-N23. 2012. (IF 2.11)

2011

(86)  Subhasis Roy, and S.B. Majumder “Percolative dielectric behavior of wet chemical synthesized lead lanthanum titanate- cobalt iron oxide composite thin films”, Physics Letters A , Elsevier, Vol. 375, pp. 1538–1542, 2011. (IF 1.77)

(87) Subhasis Roy, Ratnamala Chatterjee, and S.B. Majumder “Magnetoelectric coupling in sol-gel synthesized dilute magnetostrictive - piezoelectric composite thin films”, Journal of Applied Physics, AIP Publishers, Vol.110, pp. 036101-. 036104, 2011. (IF 2.08)

(88) Subhasis Roy, Ratnamala Chatterjee and S.B. Majumder “Magnetoelectric coupling in sol-gel synthesized dilute magnetostrictive - piezoelectric composite thin films”. Virtual Journal of Nanoscale Science & Technology, APS and AIP, Vol. 24, pp. 7-10 , 2011.

2010

(89) “Electrical and Magnetic Properties of Sol-Gel Synthesized CoFe2O4/Pb0.85La0.15TiO3 Composite Thin Films”, Subhasis Roy and S.B. Majumder , Integrated Ferroelectrics, Taylor & Francis, Vol. 121, pp. 120-128, 2010. (IF 0.836)

2008

(90) "Preparation of Polyaniline Nanofibers and Nanoparticles via Simultaneous doping and Electro- deposition", Subhasis Roy, Saikat Chakraborty, Saibal Ganguly, and Kajari Kargupta Materials Letters, Elesevier ,Vol. 62, pp. 2535-2538, 2008. (IF 3.36)

(91) “Investigations on Flexible Multiferroic Composites”, Subhasis Roy, Bulbul Biswas and S.B. Majumder, Mesoscopic, Nanoscopic, and Macroscopic Materials, American Institute of Physics, Vol. 1063, pp. 276-289, 2008.

Books

Authors

1.  Text book on “Introduction to Nano Biotechnology” R. Santha Kumari, Umabti Sahu, Anand Konkala, R. Indira, Subhasis Roy, ISBN: 9789357574754, 2023, Scientific International Publishing House (SIPH), India

2.  Nanomaterials and Hydrogen Energy in Solving the Energy Crisis, ISBN: 978-81-966422-2-8, Infinite Research, 2023, Dr. T. Rajani, Dr. Rohit Srivastava, Dr. Subhasis Roy, Dr. G. Ramanathan

3.  Text book on Solar Energy Advancements and Application  by  Akriti Garg, Dr. Balachandra Pattanaik, Dr. Hari Kumar Singh, Dr. Meena. S, Subhasis Roy, ISBN: 9789357574211, 2023, Scientific International Publishing House (SIPH), India.

4.      Text book on Material Engineering And Science, Dr. Vimal Sagar, Dr. Anthati Sreenivasulu, Dr. S.K. Joshi, Dr. Subhasis Roy AGPH Books ( Academic Guru Publishing House, India), First Edition :  2023, ISBN-978-93-95936-82-8

5.  Text book on Solar Energy Advancements and Application  by  Akriti Garg, Dr. Balachandra Pattanaik, Dr. Hari Kumar Singh, Dr. Meena. S, Dr. Subhasis Roy, ISBN: 9789357574211, 2023, Scientific International Publishing House (SIPH), India.

Editor 

1.    Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 12 e - ISBN: 978-93-5747-436-8 Publisher: Iterative International Publishers (IIP), Selfypage Developers Pvt Ltd. Volume: 3-2024

2. Technological Developments in Engineering and Management - TDEM 2022, Tech Press New Delhi, India., First Edition: 2022, ISBN : 978-93-91697-12-9

3. Recent Innovations in Engineering and Management - RIEM 2022, Tech Press New Delhi, India., First Edition: 2022 First Edition : 2022 ISBN : 978-93-91697-14-3

Book Chapters

1.      Sanglap Mondal,Soumyodeep Haldar, Subhasis Roy, (2024) Recent Advancements in the Harvesting and Storage of Solar Energy. In:Rahimpour, M. R. (ed.) Encyclopedia of Renewable Energy, Sustainability, and the Environment, vol. 2, pp. 389–402. US: Elsevier,http://dx.doi.org/10.1016/B978-0-323-93940-9.00001-3

2.      Applications, Biomedical Necessities, and Green Future of Metallic Nanoparticles, Jyoti Bhattacharjee and Subhasis Roy. Book - Recent Advancements in Multidimensional Applications of Nanotechnology pp: 162-184 (23) DOI: 10.2174/9789815238846124010010

3.      Applications, Biomedical Necessities, and Green Future of Metallic Nanoparticles  ,Jyoti Bhattacharjee and Subhasis Roy .  pp: 162-184 (23)  DOI: 10.2174/9789815238846124010010 , Editors: Virat Khanna, Suneev Anil Bansal, Vishal Chaudhary, Reddicherla Umapathi, Recent Advancements in Multidimensional Applications of Nanotechnology,Volume 1. ISBN: 978-981-5238-84-6

4.      Soft Computing Techniques in Wind Conversion Systems, Jyoti Bhattacharjee, Subhasis Roy, Book Soft Computing in Renewable Energy Technologies Edition 1st Edition First Published 2024 Imprint CRC Press Pages 22 eBook ISBN 9781003462460

5.      Nanomaterials for biofuels- Abdul Aziz Shaikh, Rituparna Roy, Subhasis Roy, Book chapter to be published in Elsevier, Book titled “BIOFUEL CELLS AND ENERGY GENERATION, book- Biofuel Cells and Energy Generation

6.      Bio-Butadiene-Based Rubbers in Damping and Sound Absorption Applications,Jyoti Bhattacharjee and Subhasis Roy, pp-227 Properties and Applications, of Butadiene Rubbers Soney C. George,Editor, 2024 by Nova Science Publishers, Inc. ISBN: 979-8-89113-969-5

7.      Semiconducting Fiber-based Flexible Thermoelectrics, Jyoti Bhattacharjee, Debjani Bhakta, and Subhasis Roy, 1st Edition Semiconducting Fibers Preparation, Advances, and Applications, Edited By Ram K. Gupta, ISBN 9781032696317, pp-138, 2024 by CRC Press DOI-10.1201/9781032697659-12

8.      Nanomaterials and Their Applications in Electronics, Healthcare, and Energy , Jyoti Bhattacharjee and Subhasis Roy, Advances in Nanotechnology. Zacharie Bartul and Jérôme Trenor (Editors) Series: Advances in Nanotechnology Volume 30, pp 79,.2024. ISBN: 979-8-89113-780-6 Categories: 2024, Books, Engineering & Technology, Nanotechnology, Nanotechnology and MEMS, Nova, Science and Technology, Technology and Engineering,

9.      Bhattacharjee, J., Subhasis Roy (2024). Significance of Renewable Energy in Water Management and Irrigation. In: Suriyanarayanan, S., Shivaraju, H.P., Jenkins, D. (eds) Water Management in Developing Countries and Sustainable Development. Water Resources Development and Management. Springer, Singapore. eBook ISBN 978-981-99-8639-2, https://doi.org/10.1007/978-981-99-8639-2_12

10.  Sustainable solid waste disposal to mitigate water pollution problem and it’s social environmental impact, Shyamal Datta, Mouli Mitra, Subhasis Roy, Solid Waste Management in Delta Region for SDGs Fulfillment, Delta Sustainability by Waste Management, Book,Aug 2024,Editors:Mahmoud Nasr, Balasubramani Ravindran, eBook ISBN 978-3-031-58253-0

11.  Environmental impact Green Remediation of Microplastics Using Bionanomaterials , Jyoti Bhattacharjee, Subhasis Roy Book Remediation of Plastic and Microplastic Waste Edition1st Edition First Published 2024 Imprint CRC Press, Pages21 eBook ISBN 9781003449133, DOI-10.1201/9781003449133-14

12.  Diamanoids and diamane oxide synthesis and properties: an overview, Sanglap Monda, Swapnadipa Patra1, S K Rozi Unnesa Alam, Soumyadeep Mitra and Subhasis Roy, Published April 2024 , IOP Publishing Ltd 2024,Pages 7-1 to 7-27. The book titled ‘Diamane: Fabrication, properties and new advances in 2D diamond’ edited by Santosh K. Tiwari and Arpan Kumar Nayak. DOI: 10.1088/978-0-7503-5939-9ch7, Part of ISBN: 978-0-7503-5939-9

13.  "Characteristics, Applications, and Limitations of Nanocomposites in Biosensing" Jyoti Bhattacharjee, Debjani Bhakta, Subhasis Roy, Pages: 31, DOI: 10.4018/979-8-3693-1094-6.ch006, ISBN13: 9798369310946, IGI Global, in book "Smart and Sustainable Applications of Nanocomposites" Rajni Garg, Ansar Anjum Projected Release 2024

14.  Future of the Semiconductor Industry, Sujit Mukherjee, Debmalya Pal,Arunava Bhattacharyya, and Subhasis Roy, DOI: 10.1201/9781003450146-28, Handbook of Semiconductors. 359-374 chapter 28

15.  Futuristic Trends in Chemical, Material Sciences & Nano Technology e-ISBN: 978-93-5747-436-8 IIP Series, Volume 3, Book 12, Part 2, Chapter 1 Introduction of futuristic trends in chemical material sciences & nano technology.

16.  Applications of Futuristic Trends of Chemical Material Sciences & Nano Technology, IIP Book Series, IIPV3EBS06_G65. Debjani Bhakta, Swapnadipa Patra, Subhasis Roy. Futuristic Trends in Chemical Material Sciences & Nano Technology under Volume 3, 2023, IIP Proceedings, e-ISBN: 978-93-5747-436-8 IIP Series, Volume 3, Book 12, Part 2, Chapter 4 Applications of futuristic trends in chemical material sciences & nano technology, 2024.

17.   Introduction of Futuristic Trends in Chemical Material Sciences & Nano Technology  IIP Book Series

18.  IIPV3EBS06_G65 Futuristic Trends in Chemical Material Sciences & Nano Technology, Jyoti Bhattacharjee, Subhasis Roy,  under         Volume 3, 2023, IIP Proceedings, e-ISBN: 978-93-5747-436-8, IIP Series, Volume 3, Book 12, Part 2, Chapter 1, 2024

19.  18.Arpan Kar, Sowmik Maji, Somoprova Halder, Subhasis Roy, Bhaskar Chandra Das, Chapter 15 - Nanoceramics in advanced materials industry for renewable energy and storage, Editor(s): Shadpour Mallakpour, Chaudhery Mustansar Hussain, In Micro and Nano Technologies, Industrial Applications of Nanoceramics, Elsevier, 2024,Pages 293-319,ISBN 9780323886543,https://doi.org/10.1016/B978-0-323-88654-3.00020-2.

20.  Applications and Types of Smart Materials- Rituparna Roy, Debjani Bhakta, Subhasis Roy, page 266 , 2023 DOI: 10.4018/978-1-6684-9224-6.ch013  Book chapter to be published in IGI Global publisher of timely knowledge, Book Modeling, Characterization, and Processing of Smart Materials, DOI: 10.4018/978-1-6684-9224-6 ISBN13: 9781668492246

21.  Significance of renewable energy in water management and irrigation-Jyoti Bhattacharjee, Subhasis Roy book Gender Issues in Water Management in Developing Countries and Sustainable Development" which is intended to publish in Springer Nature, Singapore , DOI : 10.1007/978-981-99-8639-2.

22.  Agrarian Aspects of Nanotechnology Preetam Datta, Subhasis Roy, Arindam Mandal , Book  Green 

Nanotechnology: Synthesis and Applications. DOI : 10.1007/978-981-99-7943-1, Springer Nature.

23.  “Applications, Biomedical Necessities, and Green Future of Metallic Nanoparticles” Jyoti Bhattacharjee, Subhasis Roy, in BOOK, Recent Advancements in Multidimensional Applications of Nanotechnology (RAMAN), Vol1, BENTHAM SCIENCE Books (Accepted).

24.  Recent Advancements in the Harvesting and Storage of Solar Energy,Sanglap Mondal, Soumyodeep Haldar, Subhasis Roy, Reference Module in Earth Systems and Environmental Sciences, Elsevier, 2023,ISBN 9780124095489, https://doi.org/10.1016/B978-0-323-93940-9.00001-3.

25.  Manufacturing process for different nanofillers by Subhasis Roy, Arnab Biswas, Rupam Chatterjee, Shreyasi Mallick, Jyoti Bhattacharjee editors Mallakpour & Mustansar Hussain - Sustainable Nanofillers: Fundamentals, Synthesis, and Applications Expected publication November 15, 2024 by ElsevierISBN 9780323994705 (ISBN10: 0323994709)

26.  Piezoelectric Smart Materials and Commercialization: Smart Materials , Rahul Saha,  Ridipt Mishra,  Avijit Dhara,  Abir Chakravorty, Subhasis Roy, Diversity and Applications of New Age Nanoparticles, Suneev Bansal, Virat Khanna , Nilanthy Balakrishnan , Pallav Gupta,  2023, pages 267-294, ISBN13: 9781668473580 | ISBN10: 1668473585 | EISBN13: 9781668473603, 2023, 10.4018/978-1-6684-7358-0.ch011.

27.  Polymer nanocomposite foams as metal ions removers Arvil Dasgupta, Souhardya Bera, Arnab Roy, Rishov Kumar Das, Subhasis Roy Book “Recent advancements and innovative approaches in multifunctional polymeric foams, Dr.SoneyC.George    Edition First Published 2023 Imprint CRC Press Pages19 eBook ISBN9781003218692, 2023, http://dx.doi.org/10.1201/9781003218692-5

28.  Fundamentals and functionalization  of CNTs and other carbon nanomaterials, , Swastik Paul, Shib Sankar Mandol, Ankit saha,  Subhasis Roy, doi:10.1016/B978-0-12-824366—4.00008-X , Elsevier, book- Nanomaterials for Theranostic Applications 1st Edition - September 30, 2022 Editors: Shadpour Mallakpour, Chaudhery Mustansar Hussain Paperback ISBN: 9780128243664

29.  From 3.8% to over 23.8% Power Conversion Efficiency: Commercial Perovskite Solar Cells, Significant Manufacturing Techniques, and Future Prospects” Encyclopedia of Materials: Electronics, Subhasis Roy Paul Arkashis Sarkar Baidurya Paul Swastik Abdul Moyez Hyun Suk Jung,  doi:10.1016/B978-0-12-819728-8.00044-9, Reference Module in Materials Science and Materials Engineering, Elsevier,2022, ISBN 9780128035818

30.  Application and Commercialization of Piezoelectrics to Smart Materials and Commercialization of Piezoelectrics to Smart Materials, book New age nanoparticles: Diversity and applications, in IGI Global, USA 2022.

31.  A Comparative Study of 0D, 1D, and 2D Nanocatalysts Towards CO2 Conversion, Arindam Mandal , Subhasis Roy, Print ISBN   978-1-83916-311-1, 2022 Rsc  book-2D Nanomaterials for CO2 Conversion into Chemicals and Fuels, Editors: Kishor Kumar Sadasivuni, Karthik Kannan, Aboubakr M Abdullah, Bijandra Kumar

32.  Supercapacitors Based on Waste Generated in Automobiles, Souhardya Bera and Subhasis Roy , ISBN 9781032013596 March 29, 2022 Imprint CRC Press Pages14 eBook ISBN9781003178354, 10.1201/9781003178354-32  Book Energy from Waste Edition1st Edition First Published Edited By Ram K. Gupta, Tuan Anh Nguyen

33.  Recent Advances in Transition Metal Chalcogenides for Flexible Supercapacitors By Somoprova Halder, Souhardya Bera, Subhasis Roy, doi:10.1201/9781003186755-26 Book Smart and Flexible Energy Devices Edition1st Edition First Published, 2022 Imprint CRC Press Pages19 eBook ISBN9781003186755

34.  Chalcogenides for photoelectrochemical water splitting,  Dipanjan Sengupta, Tridib Kumar Sinha, Subhasis Roy and Kalisadhan Mukherjee in book IOP Publishing Nanostructured Materials for Photoelectrochemical Water Splitting Jih-Hsing Chang, Mohanraj Kumar and Arpan Kumar Nayak, IOP Publishing Ltd, Hardback ISBN: 9780750336970, doi:10.1088/978-0-7503-3699-4ch6 page 6-1, 2021

35.  PbS Nanoparticle Sensitized Fe-Doped Mesoporous TiO2 Photoanodes for Photoelectrochemical Water Splitting. Halder S., Maitra S., Subhasis Roy. Innovations in Sustainable Energy and Technology. Springer, Singapore, pp 23-34, 2021, ISBN 978-981-16-1119-3. https://doi.org/10.1007/978-981-16-1119-3_3

36.  Application to Advanced Materials Simulation By Soumyajit Maitra, Souhardya Bera, Subhasis Roy Book Computational Technologies in Materials Science Edition 1st Edition 2021, Imprint CRC Press Pages 30 eBook ISBN9781003121954, DOI: 10.1201/9781003121954-2

37.   “Performance enhancement of dye-sensitized solar cell using extracted photo-sensitized organic molecules in addition with dielectric nanomaterial” Dey, A., Subhasis Roy, S., Mondal, S.,. in Advances in Bioprocess Engineering and Technology. Springer Singapore Print ISBN: 978-981-15-7408-5 Electronic ISBN: 978-981-15-7409-2, page 415-422, 2020.

38.  "Review on the Recent Advances on Multiferroic Thin Films and Composites", Subhasis Roy. and Majumder, S.B., In Dielectrics and Ferroelectrics: Modern Perspectives, R.N.P. Choudhary and A.K. Thakur (Eds.), Anamaya Publishers, New Delhi, India (In Press).

39.  Optimization of TiO2–KMnO4 Composites with Natural Dyes for Solar Cell Application Shyamal Datta, Subhasis Roy,  Advances in Bioprocess Engineering and Technology. Springer Singapore Print ISBN: 978-981-15-7408-5 Electronic ISBN: 978-981-15-7409-2, Pages 397-404, 2020.

40.  “Composite film processing in Chemical Solution Deposition of Functional Oxide Thin Films” R. Dorey, Subhasis Roy, A. Sharma, C. Ghanty, S.B. Majumder, Chemical Solution deposition of functional oxide thin films, ISBN 978-3-211-99310-1 ISBN 978-3-211-99311- 8 (eBook), DOI 10.1007/978-3-211-99311-8, Springer Wien Heidelberg New York Dordrecht London,pp 445-482, 2013.

Proceedings of Conferences and Presentations

1.       Enhancing Efficiency and Stability in Perovskite Solar Cells through Hybrid Device Architectures (OT -14) Jyoti Bhattacharjee, Subhasis Roy, International conference on semiconductor technologies – materials to chips (icst - 2024) (hybrid platform) from 18th – 20th September 2024, Amity Institute for Advanced Research and Studies (Materials & Devices) & Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida, U.P.,INDIA

2.       Fabrication of Nano-Carbon-Based Sustainable Perovskite Solar Cells Jyoti Bhattacharjee and Subhasis Roy,  2024 ECS - The Electrochemical Society ECS Meeting Abstracts, Volume MA2024-01, B01: Carbon Nanostructures for Energy Conversion and Storage,   MA2024-01 790 DOI 10.1149/MA2024-017790mtgabs.

3.       Two day international conference, contemporary perspectives on strategies for conservation of biodiversity and realizing sustainable development goals – 2024 CPSCBRSD -2024(sustainable nature- 2024) 4-5 July 2024, Enhancing efficiency and stability in perovskite solar cells through hybrid device architectures, Jyoti Bhattacharjee, Ssubhasis Roy, pp 12.

4.       Plant-mediated green synthesis of noble metal nanoparticles for thermoelectric application Sanglap Mondal, Jyoti Bhattacharjee, Subhasis Roy, Conference Proceedings: IIChE-CHEMCON 2023, Abstract ID: ANN-OP9, ISBN: 9789310 000719.

5.       Architecture of inorganic-organic hybrid perovskites for enhanced stable photovoltaic performance Subhasis Roy, (ICRTMD 2023), Abstarct book, ICRTMD-2023/FIT/SIT/218, Page 61

6.       Biogenic Electrodes for Low-Temperature Solid Oxide Fuel Cells, Jyoti Bhattacharjee and Subhasis Roy, 2023 ECS - The Electrochemical Society ECS Meeting Abstracts, Volume MA2023-01, in Fuel Cells, Electrolyzers, and Energy Conversion 2023 Meet. Abstr. MA2023-01 2805 DOI 10.1149/MA2023-01402805mtgabs

7.       International Hybrid Conference on Nano Structured Materials and Polymers (ICNP 2023), Functionalized Nanomaterials Based Devices for Energy, pp-106

8.   Applications

9.   Biogenic Electrodes for Low-Temperature Solid Oxide Fuel Cells- Jyoti Bhattacharjee, Subhasis Roy. Status- Under preparation. (For ECS Journals)

10.   International Conference on Chemical Engineering Innovations & Sustainability, Jadavpur University (ICEIS2023) February 26- 27, 2023

11.   The magnificence of humbles,isbn 978-81-907938-0-3”Environment Needs Innovation”

Jyoti Bhattacharjee, Subhasis Roy, pp-58, 2023

12.“Chemical Approaches Toward Eco-friendly and Stable of Perovskite Based Thin Films Solar Cells” conference proceedings International Conference on Recent Trends in Chemical Sciences-2022(RTCS-2022) 59th Convention of Chemists (ACC-2022) of Indian Chemical Society is being organised at the Department of Chemistry &Biology, Indian Institute of Technology (ISM) Dhanbad , Jharkhand during December 16-18, 2022, pp 50

13.Cadmium sulphide Sensitized Fe-doped SnO2 Photoanodes for Photoelectrochemical Water Splitting Somoprova Halder1, Sagnik Bhattacharya1, Subhasis Roy , Proceedings of CUChE Alumni Symposium 2021 On “Diverse Applications of Chemical Engineering” Volume 1, Issue 1, December 2021, ISBN: 978-81-954649-0-6

14.   A combined photoelectrochemical and electrochemical analysis of MnMoS4 nanostructured electrodes for multifunctional applications Somoprova Halder, Subhasis Roy Apr 5-May 1, 2021 ACS Spring Meeting 2021, https://doi.org/10.1021/scimeetings.1c00605

15.Simulated performance studies of thin film perovskite solar cell , Subhasis Roy, ICESD2020_038 International Conference on Energy and Sustainable Develeopment Jointly organized by Jadavpur University and The Institution of Engineers, India, February 14-15, 2020 Jadavpur-ICESD conference.

16.Ultrathin SnS2 Nanosheet Decorated B-TiO2 / TiO2 Core Shell Nanorods for Photoelectrochemical Water Splitting Soumyajit Maitra, Somoprova Halder, Toulik Maitra1 and Subhasis Roy, 2021 ECS - The Electrochemical Society Meet. Abstr. MA2021-02 1432

17.   CdS Sensitized Solvothermal Phase Change Assisted Synthesis of CoTiO3 @ TiO2 Nanorods As a Ternary Heterojunction Photoanode for Photoelectrochemical Water Splitting, Soumyajit Maitra, Toulik Maitra, Subhan Pal and Subhasis Roy ECS Meeting Abstracts 2020-11-23 | journal-article DOI: 10.1149/ma2020-02563749mtgabsPart of ISSN: 2151-2043,.

18.   PbS Nanoparticle Sensitized Fe- Doped Mesoporous TiO2 Photoanodes for Photoeletrochemical Water Splitting Somoprova Halder, Soumyajit Maitra, Subhasis Roy,  in Sustainable Energy and Technology conference (ISET India2020) organized by Rajiv Gandhi Institute of Petroleum Technology (RGIPT) Dec 03-04, 2020

19.   Supercapacitor electrodes: A mini review, Rajeev Ranjan, Subhasis Roy, GAA 2020 & Indo American Multidisciplinary Web Conference on Arts, Science, Engineering, and Technology IAMWCASET-2020 proceedings, 31st August 2020. Page-89-93,ISBN -978-81-945642-4-9.

20.    “Simulated performance studies of thin film perovskite solar cell.” Shyamal Datta, Subhasis Roy Conference: Proc. ICESD 2020_038 , ISBN 978-93-83660-56-8. 2020.

21.   “Optimization of TiO2/ KMnO4 composites with natural dyes for solar cell Application” Shyamal Datta, Subhasis Roy, 2nd International Conference on Advances in Bioprocess Engineering and Technology 2020 (ICABET 2020) on January 20-22, 2020, Page - O-93

22.   “Performance enhancement of Dye-sensitized solar cell using extracted photosensitized organic molecules in addition with dielectric nanomaterial” Argha Dey, Subhasis Roy and Sourav Mondal, 2nd International Conference on Advances in Bioprocess Engineering and Technology 2020 (ICABET 2020) on January 20-22, 2020, Page - O-96.

23.   “Simulated performance studies of thin film perovskite solar cell, International Conference on Energy and Sustainable Development” Shyamal Datta, Subhasis Roy, Jointly organized by Jadavpur University and The Institution of Engineers, India February 14- 15, 2020.

24.   “Synthesis and Characterization of Nanomaterials for Photoelectrochemical application” Subhasis Roy on 10th January, 2020 in “International Conference on Chemistry for Human Development  (ICCHD-  2020)  in  collaboration  with  „University  of  Calcutta‟  and  “Heritage Institute of Technology” during January 9-11, 2020 in Calcutta, IL-63, Page-136

25.   “Nickel Doped Molybdenum Oxide Thin Film Counter Electrodes as a Low-Cost Replacement for Platinum in Dye Sensitized Solar Cells” Soumyajit Maitra , Subhan Pal , Shyamal Datta , Subhasis Roy, 3rd International Conference on Solar Energy Photovoltaic from 19th December 2019 to 21st December 2019 at KIIT Deemed University, Bhubaneswar, India, from 19th – 21th December 2019, Page- 0608

26.  

“Titanium dioxide and KMnO4 composite film on FTO glass as a working electrode for solar cell application” Young. Scientists' conference. Subhasis Roy 5-7 NOVEMBER, Indian International Science Festival-2019. BISWA BANGLA CONVENTION CENTRE. KOLKATA. Ministry of Science and Technology, India.

27.   “Integrated Metal Oxide Hybrid Perovskite Photoelectrode for Efficient Photoelectrochemical Water Splitting” Gerardine G. Botte, Subhasis Roy, 231st

Electrochemical Society Meeting New Orleans, LA,USA, May 28- Jun 1, AI 1439, 2017 DOI: 10.1149/ma2017-01/30/1426Part of ISSN: 2151-2043

28.   “Fabrication of Lead (Pb) free CH3NH3SrICl2 based thin film perov-skite solar cell at ambient condition” Subhan Kumar Pal , Sk Abdul Moyez, Sneha Mukherjee , Subhasis Roy, Emerging Trends for Sustainable Development, 2019 (ICETSD '19) 05-06 th March, 2019, Page 61-64

29.   “Synthesis and Characterization of the Organo-Lead Halide- Based Perovskite Solar cell”, Abhishek Dhar, Argha Dey , Subhasis Roy, Sharmistha Paul, 24th West Bengal State Science and Technology Congress, 2017, Presidency Division, NITTTR, Kolkata, India, 28th February/ 1st March, pp-117, 2017 (Awarded first prize).

30.   “Optimization of Pb-Sn Based perovskite Solar cells”, Abhinanda Sengupta, Sk Abdul Moyez, Asit Baran Biswas, Bhaskar Chandra Das, Subhasis Roy, CHEMCON 2016,  Chennai Regional Centre of IIChE, Chennai, Tamilnadu during 27-30 December, 2016, T-43, PP.1244. (Awarded 2nd best prize)

31.   “Fabrication of Environmental Friendly Perovskite Solar Cells by Partial Replacemnet of Lead with Tin”, International symposium on semiconductor material and devices (ISSmd - 4), Abhinanda Sengupta, Sk Abdul Moyez, Bhaskar Chandra Das, Subhasis Roy, School of Materials Sciences & Nanotechnology Jadavpur University, Kolkata, during 8–10 Mar 2017.

32.   “Combined Organic-Perovskite Solar Cell Fabrication as conventional Energy substitute” Argha Dey, Subhasis Roy, 2nd International Conference on Solar Energy Photovoltaic, ICSEP 2016, held at School of Electronic Engineering, KIIT University, Bhubaneswar, Odisha, 17 -19 December 2016, P-0207, pp 73.

33.   “Fabrication and study of Perovskite-based Solar Cell as an Alternative Sources of Energy”, Abhishek Dhar, Argha Dey, Subhasis Roy, Sharmistha Paul, 1st Regional Science & Technology Congress-2016, Presidency Division, NITTTR, Kolkata,India, November 13- 14,pp-158, 2016 (Awarded first prize).

34.  

“Tailoring the surface morphology with annealing temperature of the lead-free perovskite solar cell, CH3NH3SnCl3 and its relation to the cell performance”. Sk Abdul Moyez, Subhasis Roy, 2nd International Conference on Solar Energy Photovoltaic, ICSEP 2016, , held at School of Electronic Engineering, KIIT University, Bhubaneswar, Odisha, 17 - 19 December 2016, P-0212, pp 27.

35.     “Studies on the Perovskite-based Solar Cell as Energy Harvesting Substitute” Argha Dey, Sk.Abdul Moyez, Asim Kumar Hajra, Subhasis Roy at National Conference on Recent Trends in Functional Materials in Relation to Nanomaterials and Nanotechnology (RTFMNN). Organized by Department of Chemistry, St. Paul‟s Cathedral Mission College, Kolkata, India. February 4-5, 2016.

36.   “Nano Bio-synthesis of Anthocyanin and Chlorophyll for Dye Sensitized Solar Cells Application” Sk. Abdul Moyez, Argha Dey, Subhasis Roy at International Conference on Advances in Bioprocess Engineering and Technology (ICABET 2016). Organized by Department of Chemical Engineering and Department of Biotechnology, Heritage Institute of Technology, Kolkata, India. January 20-22, pp-155, 2016.

37.   “Synthesis of Natural Dyes to Repalce the Organic Dyes for the Fabrication of Dye- Sensitized Solar Cell” Sk. Abdul Moyez, Argha Dey, Sanjoy Maity, Subhasis Roy at National Conference on Recent Trends in Functional Materials in Relation to Nanomaterials and Nanotechnology (RTFMNN). Organized by Department of Chemistry, St. Paul‟s Cathedral Mission College, Kolkata, India. February 4-5, pp-69, 2016.

38.   “Biomolecules Combined Hybrid Perovskites for Energy Efficient Solar Cell” Argha Dey, Milan Kumar Mandal, Sk.Abdul Moyez, Subhasis Roy at International Conference on Advances in Bioprocess Engineering and Technology (ICABET 2016). Organized by Department of Chemical Engineering and Department of Biotechnology, Heritage Institute of Technology, Kolkata, India. January 20-22, , 2016.

39.   “Ferroelectric and Magnetic Behaviors of CoFe2O4/Pb0.85La0.15TiO3 nano-Composite Thin Films Synthesized By Sol-Gel Precursor Hybrid Processing Route”, Subhasis Roy and S.B. Majumder , at International Conference on Nano Science and Technology (ICONSAT), IIT Bombay, Mumbai, India, February 17-20, FM-62, 2010.

40.   “Flexible Solid-state Dye-sensitized Solar Cells Based on ITO Nanowire Arrays”, Gill Sang Han, Subhasis Roy, Sangwook Lee, Jun-Hong Noh, Hyun Suk Chung, Hyun Suk Jung, MRS Spring Meeting at the Moscone, West Convention Center, April 1-5, 2013.

41.   “Development of an Automated Gas Sensing Measurement System Using Semiconducting Oxides as Sensing Material”, K. Mukherjee, K. K. Bhargav, Subhasis Roy, A. P. Gour and S.B. Majumder, at International Conference on Hi-Tech, Materials Science Centre, IIT Kharagpur., February 11- 13, 2009.

42.   “Electrical and Magnetic Properties of Sol-Gel Synthesized CoFe2O4/Pb0.85 La0.15 TiO3 Composite Thin Films”, Subhasis Roy, and S.B. Majumder, at International Conference on Electroceramics (ICE) – 2009, University of Delhi, New Delhi, India, December13-17, 2009.

43.   “Synthesis and Characterization of CoFe2O4/Pb0.85La0.15TiO3 Composite Thin Films”, Subhasis Roy, and S.B. Majumder, at International Symposium on Microwave and Optical Technology (ISMOT)-2009, Hotel Ashok, New Delhi, India, December 16 – 19, 2009.

44.   “Analysis of Deposition and Dewetting Characteristics of Polyaniline (PANI) Films  using Langmuir Blodgett Technique”, S. Manigandan, Subhasis Roy, Saikat Chakraborty, Saibal Ganguly, and Kajari Kargupta, CHEMCON, Kolkata, December 27-30, 2007.

45.   "Wet chemical synthesis of electro-ceramic thin films", Subhasis Roy and S.B. Majumder, at National Conference on Recent Advances in Innovative Materials (RAIM-2008), NIT, Hamirpur, February 16-17, 2008.

46.   "Dielectric and Magnetic Properties of Flexible PVDF: CoFe2O4 Composites,” Subhasis Roy, and S.B. Majumder at National Seminar on Ferroelectric & Dielectrics (NSFD-15), School  of  Physics  &                     Material Science, Thapar University, Patiala- 147004, India, November 6-8, 2008.

47.   Enhanced-Light-Harvesting ITO Nanowire Arrays for Efficient Solid-State Dye- Sensitized Solar Cells, Gill Sang Han, Sangwook Lee, Jun-Hong Noh, Subhasis Roy, Hyun Suk Jung, 7th International Conference on Surfaces, Coatings and Nanostructured Materials (NANOSMAT)” held in Prague, Czech Republic, September 18-21 2012.

48.   Efficiency enhancement of perovskite CH3NH3PbCl3 based chlorophyll dye sensitized thin film solar cells, Argha Dey, Subhasis Roy, Bhaskar Chandra Das at 70th Annual Session of Indian Institute of Chemical Engineers CHEMCON – 2017. Organized by Indian Institute of Chemical Engineers, Haldia Regional Centre & Department of Chemical Engineering, Haldia Institute of Technology, Haldia, West Bengal, India. December 27 – 30, pp 12, 2017.

49.   Efficiency and Stability Enhancement of Caesium Based Perovskite Quantum Dot Solar Cell, Sneha Mukherjee, Sk Abdul Moyez, Subhasis Roy, International Conference on

Nanotechnology (ICNT - 2018), Department of Fire and Safety Engineering, Institute of Fire and Safety Engineering, Haldia, India, November 16-17, 2018, page 73.

50.   Cationic replacement of lead (Pb) to improve environmental stability of perovskite based solar cells, Subhan Pal, SK Abdul Moyez, Subhasis Roy, International Conference

on Nanotechnology (ICNT - 2018), Department of Fire and Safety Engineering, Institute of Fire and Safety Engineering, Haldia, India, November 16-17, 2018, page 74.

                                            INVITED LECTURES DELIVERED                                                                      

Abroad :

  1.        Invited talk on “Photovoltaic : From Basics to Breakthroughs” Summer School Titled “Nanoscience and Nanotechnology: Fundamentals, Instrumentation and Applications” at CRNN University of Calcutta 24th July, 2024

2.        Invited talk on "Architecture of inorganic-organic hybrid perovskites for enhanced stable photovoltaic performance" in 2nd International Conference on Recent Trends in Materials Science & Devices 2023  (ICRTMD 2023), Technical Sat Kabir Institute of Technology and Management, Jhajjar, Haryana, India, 30th Dec, 2023 , organized by Research Plateau Publishers in association with Sat Kabir Institute of Technology & Management,Bahadurgarh, Haryana, India.

3.        Invited Speaker at International Summit on Metallurgical Engineering and Mineral Processing (ISMEMP2024) which will be held during November 04-06, 2024 in Vancouver, Canada

4.        Invited talk on  “Architecture of inorganic-organic hybrid perovskites for enhanced stable photovoltaic performance” , 2nd International Conference on Recent Trends on Materials Science & Devices 2023 (ICRTMD-2023) 29 - 31 December

5.        Invited talk on  “Perovskite Nanomaterials for eco-friendly and stable solar cell applications” World Summit on Sustainable Materials December 05-06, 2022 London, UK “Latest Innovations in material science for a sustainable world”.

6.        Invited talk on  “Thin Films Perovskite Nanomaterials for solar cell applications” International Online Conference on Energy Sciences (ICES 2021), Organized by, Oman & Wroclaw University of Technology, Wroclaw, Poland,and Mahatma Gandhi University, P.D Hills P.O, Kottayam Kerala, India & National University of Science and Technology December 10,  2021.

7.        Speaker of Session—HYDROGEN GENERATION AND STORAGE Mechanics, UK Aberdeen 9-12 july, 2018.

8.        Invited talk on “Integrated Metal Oxide Hybrid Perovskite Photoelectrode for Efficient Photoelectrochemical Water Splitting” 231st Electrochemical Society Meeting, New Orleans, LA,USA, Jun 1, 2017, DOI: 10.1149/ma2017-01/30/1426Part of ISSN: 2151-2043.

9.           Invited talk on Functionalized Nanomaterials and its Applications, NEFES 2020 November 3-6, 2020, Online Conference, Beijing.

10. Invited talk on “Design, Synthesis and Characterization of Functionalized Nanomaterials and its Applications” Department of Chemical and Biomolecular Engineering, Stocker Center 181,1 Ohio University, Athens , USA, 23rd January 2017.

11. Invited talk on “Functionalized Nanomaterials and its Applications” (FES2554) Thursday Afternoon, November 5,2020 Beijing in The 5th International Conference on New Energy  and Future Energy Systems (NEFES 2020).

12. Invited talk on “Hybrid Materials”, Department of Materials Science and Engineering, Seoul National University, South Korea under Professor Ki-Bum Kim group, 12th May, 2013.

India :

13. Invited talk on  “Functionalized Nanomaterials Based Devices for Energy-Related Applications” International Hybrid Conference on Nano Structured Materials and Polymers (ICNP 2023) May 12-14, 2023, School of Energy Materials (SEM) Mahatma Gandhi University, P.D Hills P.O, Kottayam Kerala, India

14. Invited talk on  ‘Nanomaterials based devices for renewable energy applications’ One day State Level Seminar “Chemistry for Sustainable Future”11th May, 2013, organized by Department of Chemistry in collaboration with IQAC, Rammohan College,

15. Keynote Lecture on “Construction and Demolition Waste Management and Recycling: Challenges and Opportunities” at the National Workshop on "The utilization of local and recyclable waste materials in construction: present scenario and future scope" organized by our institute (JISIASR Kolkata), supported by Accelerate Vigyan Program under Karyashala Scheme, SERB, Govt. of India. The workshop will be held at JISIASR from January 09 to January 15, 2023

16. Invited talk on  “Affordable and Clean Energy” an International  online conference on the Role of Basic Sciences for Sustainable Development in connection with UNESCO's year of  Basic Sciences for Sustainable Development. ICBSSD – 2022, 16-17 Dec, 2022,  Organized by Department of Basic Sciences & Center for Nanoscience and Technology Amal Jyothi College of Engineering, Kanjirappally Koovappally P.O, Kottayam & Mahatma Gandhi University P.D Hills P.O, Kottayam Kerala, India & Gdansk University of Technology Poland.

17. Invited talk on  “Chemical Approaches Toward Eco-friendly and Stable of Perovskite Based Thin Films Solar Cells” in "International Conference on Recent Trends in Chemical Sciences-2022(RTCS-2022) 59th Convention of Chemists (ACC-2022) of Indian Chemical Society is being organised at the Department of Chemistry &Biology, Indian Institute of Technology (ISM) Dhanbad , Jharkhand during December 16-18, 2022.

18. Invited talk on perovskite solar cell  in the International ,Conference on Nanomaterials (ICN-2022) held at Mahatma Gandhi University, Kottayam, Kerala, India. from 12th -14th , August 2022.

19. Invited talk on Functionalized hybrid perovskite for energy application (Invited)  One Day webinars on Recent Advances in Renewable Energy and Materials for Sustainable Energy: Future Prospect, organized by The Institution of Engineers (India) Durgapur Local Centre under the aegis of Mechanical Engineering Division Board, 4th August, 2022.

20. Invited talk on Functionalized hybrid perovskite solar cell - Inter/Multidisciplinary Refresher Course Research Methodology in Science and Technology, and Sustainable Development in Science and Technology February 07-22, 2022. Sponsored by UGC- Human Resource Development Centre, and organized by the University of Calcutta.

21. Invited talk on Functionalized hybrid perovskite-type fascinating nanomaterials for energy applications Webinar Internship Course on Emerging Trends in Nanomaterials for Different Device Architectures (ETNDDA-2021) Indian Chemical Society, 27th Nov,2021

22. Invited talk on Functional Nanomaterials in Energy Devices” 6th seminar of Webinar series organized by Calcutta University Chemical Engineering Alumni Association (CUChEAA) on 31.01.2021

23. Invited talk on Functionalized Nanomaterials and its Applications for Energy Devices, Contai Polytechnic, Department of Chemical Engineering India, 14th October, 2020.

24.  Invited talk on “Synthesis and Characterization of Nanomaterials for Photoelectrochemical application” on 10th January, 2020 in “International Conference on Chemistry for Human Development (ICCHD- 2020) in collaboration with „University of Calcutta‟ and “Heritage  Institute of Technology” during January 9-11, 2020 in Calcutta

25. Invited talk on as an external expert in the refreshers Course on „Avant-grade theoretical modeling and state of the art experimental techniques in Nanoelectronic devices‟. held between 10th to 21st December 2019 in nanotechnology at JIS College of Engineering Kalyani. The talk was on “Low Dimensional Nanoelectronic Devices for Clean Energy Applications” on 18th December 2019.

26. Invited talk on “'Application of Chemical Engineering on Natural Resources” Applications Department of Chemical Engineering, IGIT-Sarang ,workshop on 'Application of Chemical Engineering on Natural Resources' during 16-21 July, 2018.

27.    Invited talk on “Characterization of Functionalized Nanomaterials” Department of Chemical engineering, IIT Kharagpur, 9th October, 2017