Academic Journey
Teaching experience
16th September 2008 – continue
Associate Professor & HOD
Dept. of Physics,
Surya Sen Mahavidyalaya, Siliguri
West Bengal
India
WEBSITE - suryasencollege.org.in
Administrative Experience
Member of Board of studies of Physics, UG council, University of North Bengal from 2018 onwards
Convener, Software/Website Committee (2021 onwards)
Member, IQAC Committee (2017 onwards)
Member, Research & Development Committee (2017 onwards)
Member, Routine Committee (2021 onwards)
Member, Technical Committee (2021 onwards)
Research Area and Interests
The main areas of my study are -
(i) Nanocrystalline hydrogenated silicon thin films solar cells - In 1969, a-Si material was developed by RF glow discharge decomposition of silane gas. It was discovered that incorporation of hydrogen in the films results the passivation of defect states, thus leading to improvement in the film properties. In 1976, Carlson fabricated p-i-n junction solar cell using hydrogenated amorphous silicon (a-Si:H) thin film and since then rigorous researches are carried out in this area. The nc-Si:H materials/thin films have optical properties similar to those of a-Si:H while having transport and stability properties quite similar to those of mc-Si:H films. It is nowadays a very promising material for development of much stable solar cells with considerable value of conversion efficiency.
(ii) Oxide (Si:O:H) Silicon thin films - Hydrogenated amorphous silicon oxide (a-SiOx:H) has drawn significant attention as the wide band gap semiconductor material in photovoltaic application.
(iii) Solid phase crystallization (SPC) – It is simple and cost effective process by which amorphous silicon films have been crystallized successfully by thermal annealing to produce Polycrystalline silicon films which have wide applications in photovoltaic cells.
(iv) Hydrogenated amorphous carbon, Polymer and Diamond like carbon (DLC) films - DLC materials have some unique properties similar to diamond such as extreme hardness, low frictional coefficient, chemical inertness, high infrared transparency and an optical gap in the range of 2–3 eV. These make them suitable for a number of applications such as protective coatings for mechanical elements, hard disks, magnetic media, optical fiber and biosensors, wear protective and antireflection coatings for solar cells.
My Research Experience
(A) April 2008 – 15th September 2008
Position: Senior Research Fellow
[CSIR, Govt. of India]
(B) February 2007 – March 2008
Position: Senior Research Fellow
[Under a project funded by Ministry of New and Renewable Energy (MNRE)]
(C) February 2005 – February 2007
Position: Junior Research Fellow
[Under a project funded by Ministry of New and Renewable Energy (MNRE)]
Research Guide: Prof. Swati Ray
Energy Research Unit
Indian Association for the Cultivation of Science
Jadavpur, Kolkata
India
Publications in International/National Peer-Reviewed Journal
Papers Published in International peer reviewed research Journals:
1. “Optoelectronic and structural properties of plasma deposited nanocrystalline hydrogenated silicon oxide thin films”, Tapati Jana and Romyani Goswami, Nano, Vol 16, No. 10 (2021) 2150115 (11 pages) Published by World Scientific [Indexed in Scopus] [Impact Factor – 1.556] Journal ISSN – 1793-2920.
2. “Three Generations of Solar Cells”, Romyani Goswami, Advanced Materials Research, 1165 (2021) 113 – 130. Published by Trans Tech Publications Ltd, Switzerland [Indexed in UGC-CARE Group I Journal List] Journal ISSN – 1662 – 8985
3. “Structural studies on Si:H network before and after solid phase crystallization using Spectroscopic Ellipsometry: correlation with Raman Spectroscopy and Transmission Electron Microscopy”, Romyani Goswami and Swati Ray, Applied Surface Science 282 (2013) 615-623. Published by ELSEVIER (The Netherlands). [Indexed in Scopus] [Impact Factor – 6.182] Journal ISSN – 0169 – 4332.
4. “Transport and structural properties of silicon films in the amorphous-to-microcrystalline transition region”, Sumita Mukhopadhyay, Romyani Goswami and Swati Ray, Journal of Vacuum Science and Technology A, 27 (2009) 436-442. Published by the American Vacuum Society (United States of America). [Indexed in Scopus] [Impact Factor – 2.166] Journal ISSN – 0734 – 2101.
5. “Light induced degradation in nanocrystalline Si films and related solar cells: Role of crystalline fraction”, Sumita Mukhopadhyay, Romyani Goswami and Swati Ray, Solar Energy Materials & Solar Cells, 93 (2009) 674-679. Published by ELSEVIER (The Netherlands). [Indexed in Scopus] [Impact Factor – 6.984] Journal ISSN - 0927-0248.
6. “Transparent polymer and diamond like hydrogenated amorphous carbon thin films by PECVD technique”, Romyani Goswami, Tapati Jana and Swati Ray, Journal of Physics D: Applied Physics 41 (2008) 155413-155419. Published by the Institute of Physics (IOP) Publishing, (United Kingdom). [Indexed in Scopus] [Impact Factor – 3.169] Journal ISSN - 0022-3727.
7. “Solid phase crystallization of protocrystalline silicon films: changes in structural and optical properties”, Romyani Goswami, Biswajit Chowdhury and Swati Ray, Thin Solid Films 516 (2008) 2306-2313. Published by ELSEVIER (The Netherlands). [Indexed in Scopus] [Impact Factor – 2.03] Journal ISSN - 0040-6090.
8. “Study of Medium-Range Order and Defects in Hydrogenated Protocrystalline Silicon Films Deposited by Radio Frequency Plasma Enhanced Chemical Vapor Deposition”, Romyani Goswami and Swati Ray, Japanese Journal of Applied Physics 46 (2007) 7188-7193. Published by the Japan Society of Applied Physics (Japan). [Indexed in Scopus] [Impact Factor – 1.471] Journal ISSN - 0040-6090.
Papers Published in National peer reviewed research Journals:
1. “Solid phase crystallization (spc) of nanocrystalline silicon (nc-Si:H) films: changes in structural and optical properties” Romyani Goswami, A B N Seal Journal of Science; Vol 8; Issue No. 2 (2016). Journal ISSN – 0975-5624.
2. “Hydrogenated Nanocrystalline Silicon (nc-Si:H) Solar Cell”, Romyani Goswami, The Beats of Natural Sciences, Issue 3 (2014) 1-8, Journal ISSN - 2348 – 7615.
Book Chapters
Book Chapter by International Publisher:
1. “Improvement of Performance of Single and Multijunction Silicon Solar Cell Using Low Temperature Surface Passivation Layer and Antireflection Coating” by Tapati Jana and Romyani Goswami in Advanced Materials and Nano Systems: Theory and Experiment – Part 2, Editor – Dibya Prakash Rai, Publisher – Bentham Science, Singapore. pp – 63-77 (2022) ISBN – 978-981-5049-97-8
2. “Blended Learning in The New Normal: Opportunities and Challenges in India” by Romyani Goswami in India And The Pandemic: The Trajectories of COVID – 19 & Its Corollaries, Crescent Publishing Corporation, New Delhi, pp. 44, (2021) ISBN: 978-81-949754-2-7
3. “Investigation of n-Si:H thin films as intrinsic layer of solar cell” by Romyani Goswami in Emerging Trends and New Horizons in Applied Sciences, New Delhi Publishers, New Delhi, Chapter 4, pp. 31, (2021) ISBN: 978-81-940943-5-7
4. “The Voyage of Solar Cells from Silicon to Perovskites” by Romyani Goswami in Abstract Proceedings of Two Day International Webinar on History of Science organized by Department of Chemistry, Shri Shikshayatan College, Kilkata and Institute of Science, Education and Culture (ISEC) in collaboration with Indian Chemical Society, published by Institute of Science, Education and Culture (ISEC), Syed Amir Ali Avenue, Kolkata 700017, pp. 50, (2020) ISBN: 978-93-81042-00-7
5. “Study of Structural and Optoelectronic Properties of Nanocrystallites Embedded in Hydrogenated Amorphous Silicon Oxide (SiOx:H) films by Plasma Enhanced Chemical Vapour Deposition Technique (PECVD)” by Romyani Goswami in Crisis and Creativity, Contemporary Insights From The Field of Social & Basic Sciences, Bangiya Sahitya Samsad, Kolkata, pp. 35, (2021) ISBN: 978-93-86508-76-8
Papers Presented in International/National Conferences
Papers Presented in International Conferences:
1. “The voyage of Solar Cells from Silicon to Perovskites”, by Romyani Goswami in the Two-day International Webinar on ‘History of Science’ organized by Department of Chemistry, Shri Shikshayatan College, Kolkata & Institute of Science, Education and Culture in collaboration with Indian Chemical Society, Kolkata, West Bengal, India during 27th and 28th July, 2020
2. “Spectroscopic Ellipsometry: A powerful tool to study Si:H nanocrystals”, by Romyani Goswami in the International e-Conference on Recent Advances in Physics and Material Science – 2020 (IC-RAPMS-2020) organized by Kurseong College in collaboration with St. Joseph’s College, Darjeeling, West Bengal, India during July 9th and 10th , 2020
3. “Thin Film Nanocrystalline Si:H materials as Active Layer of Solar Cell” by Romyani Goswami in the Two-day International Conference on Recent Trends in Basic and Applied Sciences jointly organized by Department of Physics, Bhairab Ganguly College in association with Department of Physics, Dum Dum Motijheel College, West Bengal, India during 6th and 7th July, 2020
4. “Investigation of Nanocrystalline Silicon Thin Film Solid Phase Crystallization (SPC) by Spectroscopic Ellipsometry Technique” by Romyani Goswami, Two Days International Seminar on ‘Recent Advances in Mathematical Sciences and their Applications’ (RAMSA - 2018) organized by Department of Mathematics, Surya Sen Mahavidyalaya, Siliguri, West Bengal on 30-31 August 2018
5. “Nanocrystallites Embedded in Hydrogenated Amorphous Silicon Oxide Films (SiOx:H) by PECVD: Study of Structural and Optoelectronic Properties’ by Romyani Goswami at UGC Assisted Two Days International Interdisciplinary Seminar on “Contemporary Developments in Social & Basic Sciences in times of Global Crisis” organized by Surya Sen Mahavidyalaya during 28 - 29th March, 2017
6. “Photoluminescence and Bonding Configuration in Silicon Oxide Films Prepared by RF PECVD” by Romyani Goswami, Sumita Mukhopadhyay and Swati Ray presented at 18th International Photovoltaic Science and Engineering Conference and Solar Energy Exhibition (PVSEC-18) held at Kolkata, India, during January 19 – 23, 2009.
7. “Solid phase crystallization of protocrystalline silicon films: changes in structural and optical properties” by Romyani Goswami and Swati Ray presented at the International Conference on Solar Cells “IC SOLACE 2008”, organised by Department of Physics, Cochin University of Science and Technology, Cochi, Kerala, India during 21st – 23rd January, 2008.
8. “Light Induced Degradation in Nanocrystalline Si Films and Related Solar Cells: Role of Crystalline Fraction” by Sumita Mukhopadhyay, Romyani Goswami and Swati Ray presented at 17th International Photovoltaic Science and Engineering Conference and Solar Energy Exhibition (PVSEC-17) held at Fukuoka, Japan, during December 3 – 7, 2007.
9. “Studies on transport and structural properties of Si:H network in the amorphous to microcrystalline transition phase”, Sumita Mukhopadhyay, Romyani Goswami and Swati Ray presented at 15th International Photovoltaic Science and Engineering Conference and Solar Energy Exhibition (PVSEC-15) held at Shanghai, China, during 10th -15th October, 2005.
Paper Presented in National Conference:
1. “Nanocrystalline Silicon Thin Film Solar Cell”, Romyani Goswami presented at National Conference on Modern Trends in Material Science - 2015 (MTMS-2015) held at Dept. of Physics, University of North Bengal, West Bengal, India during 5 - 6 February, 2015.
2. “Microcrystalline silicon based Thin Film solar cells: dependence on i-layer structure”, Romyani Goswami, Sumita Mukhopadhyay and Swati Ray presented at Discussion Meeting on “Materials for Future Energy Systems”, organised by Materials Research Society of India (MRSI), Mumbai Chapter, Bhabha Atomic Research Centre (BARC), Mumbai, India, January 18-19, 2006.
Invited Lecture as Resource Person
Delivered a lecture on "Heritage of India" at "A thirty hours Add On Course" by Department of History, Surya Sen Mahavidyalaya on May 13, 2023
Special Lecture entitled “DigitAll:Innovation and Technology for Gender Equality” on the occasion of International Women’s Day organised by Women’s Cell and ICC, Surya Sen Mahavidyalaya on March 14, 2023
Popular Lecture on the occasion of National Science Day 2023 at North Bengal Science Centre, Siliguri and Ministry of Culture, Govt. of India on February 28, 2023
Delivered a Popular lecture entitled "The story of Photoelectric Effect" at One Day Webinar on the occasion of Albert Einstein's Nobel Prize Centenary Year Celebration organized by IQAC, Surya Sen Mahavidyalaya, Siliguri on September 4, 2021
Resource Person at the One Day Faculty Induction Program (FIP) on “Online Teaching Methodology” organized by IQAC, Surya Sen Mahavidyalaya, Siliguri on August 19, 2021. Duration – 3:30 pm to 6:30 pm
Delivered an Invited Special Lecture on “Thin Film Solar Cells” at the Department of Physics, Kalipada Ghosh Tarai Mahavidyalaya, Bagdogra, Siliguri, West Bengal on 29th June, 2021. Duration – 3:40 pm to 6:10 pm
One week (30 hrs) Faculty Development Program organized by Internal Quality Assurance Cell, Surya Sen Mahavidyalaya during September 24th to 28th, 2020
Participated in FDP/Short term course
Successfully completed Online Course on The Story of Photoelectric Effect organized by IIT Kanpur during July 15 to August 17, 2021
UGC- Sponsored Refresher Course in Natural Sciences (ONLINE) organized by UGC-HRDC Goa University from July 27, 2021 to August 9, 2021 and obtained Grade A.
Successfully completed online Course on Classical Mechanics – 1 organized by IIT Kanpur during January 26 to April 25, 2021
Successfully completed the One Week online Short term Faculty Development Programme on “ICT Tools for Teaching Learning Process- Post Pandemic Educational Strategies” which was delivered as MOOC with four quadrants, organized by Department of Physics and IQAC Sree Narayana College Kollam in collaboration with The Kerala State Higher Education Council from August 17 - 23, 2020. The Grade awarded is 'A'
National Level Online Faculty Development Programme entitled “Paradigm Shift in Teaching-Learning Pedagogy and Scope of Research Methods in Post COVID Era”, organized by Department of Education and IQAC, East Calcutta Girls’ College, Kolkata during 9th to 15th June, 2020 and obtained Grade A
UGC sponsored Refresher Course in Renewable Energy (ID) at Academic Staff College, University of North Bengal, Darjeeling from March 1, 2018 to March 21, 2018 and obtained Grade A.
UGC sponsored Refresher Course in Physics at Academic Staff College, University of North Bengal, Darjeeling from February 11, 2014 to March 03, 2014 and obtained Grade A
IUCAA sponsored Workshop on Analysis of Astronomical Data, held at the IUCAA Resource Centre, Physics Department, University of North Bengal during December 16 – 17, 2013
IUCAA sponsored Workshop on X-Ray Astronomy, held at the IUCAA Resource Centre, Physics Department, University of North Bengal during March 23 - 25, 2013
UGC sponsored 9th Orientation Programme (OP-NBU-09) at Academic Staff College, University of North Bengal, Darjeeling from March 2, 2012 to March 29, 2012
UGC sponsored National Seminar on “Facets of Modernity in Bengal, Society, Economy, Polity and Culture”, organised by Kalipada Ghosh Tarai Mahavidyalaya, Bagdogra in collaboration with Surya Sen Mahavidyalaya, Siliguri on 24th & 25th March, 2009.
“Young Scientists’ Colloquium 2007”, organised by Materials Research Society of India (MRSI), Kolkata Chapter on July 27, 2007 at Rashbehari Siksha Prangan, University of Calcutta.
A Short Course on “Advanced Techniques for Materials Characterization: Microscopy & Diffraction (ATMC-07)”, organised by Materials Research Society of India (MRSI), Kolkata Chapter, held during October 29 to November 2, 2007 at Central Glass and Ceramic Research Institute (CGCRI, Kolkata).
Awards/Recognitions received
Awarded SSM Excellence Award 2021 for outstanding contribution in the field of research during the session 2020-21 on the occasion of 24th Foundation Day of Surya Sen Mahavidyalaya, Siliguri on 15th September, 2021
2. Awarded the Best Paper Award in the Two-day International Conference on Recent Trends in Basic and Applied Sciences jointly organized by Department of Physics, Bhairab Ganguly College in association with Department of Physics, Dum Dum Motijheel College, West Bengal, India during 6th and 7th July, 2020
3. Awarded the Best Poster Award (second position) at the international conference on Solar Cell “IC-SOLACE 2008” organised by Department of Physics, CUSAT, Kerala, India during 21st – 23rd January, 2008.
4. Awarded Senior Research fellowship (SRF) for continuing research in India, by Council of Scientific & Industrial Research (CSIR), Govt. of India from April, 2008.
5. Qualified Joint CSIR-UGC National Eligibility Test (NET) for Lectureship in 2004.
6. Passed Graduate Aptitude Test in Engineering (GATE) in 2004 with a percentile score of 96.26.
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