Publication ( *: corresponding author)

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11. Prototype for strong interaction of micron-sized van der Waals materials with sub-millimeter waves using a single metal antenna, Journal of Infrared, Millimeter, and Terahertz Waves, 46, 31.

12. Unveiling the effects of spray and selenization process optimization for over 13% efficient CIGSSe solar cells through aqueous solution method, ACS Applied Energy Materials, 8(1), 134–140.

1. Reducing carrier recombination loss by doping Ag in Cu2ZnSn(S,Se)4 solar cells, Energy & Environmental Science, 17, 8609-8620 (IF=32.4)* doi: 10.1039/D4EE02485K

2. Understanding of defect passivation effect on wide band gap p-i-n perovskite solar cell, ACS Applied Materials & Interfaces, 16(27):35084-35094. doi: 10.1021/acsami.4c05838 (IF=8.3) * 

3.Understanding of the relationship between the properties of Cu(In,Ga)Se2 solar cells and the structure of Ag network electrodes, Energy & Environmental Materials, 0, e12765  (IF=15.0)  doi.org/10.1002/eem2.12765 

4.Impact of Chemical Source Selection on Aqueous Spray Deposited CZTSSe solar cells, ACS Applied Energy Materials, 7,1748-1755.  (IF=6.4) doi.org/10.1021/acsaem.3c02702

5. Achieving highly efficient kesterite solar cells using simultaneous surface Ge substitution and rear interface engineering strategies, Chemical Engineering Journal, 479, 147842. (IF=15.1)

6. Vertical Plane Depth-Resolved Surface Potential and Carrier Separation Characteristics in Flexible CZTSSe Solar Cells with over 12% Efficiency, Carbon Energy, e43 (IF=20.5) doi.org/10.1002/cey2.434

1. High Efficiency Kesterite Solar Cells through a Dual Treatment Approach: Improving the Quality of Both Absorber Bulk and Heterojunction Interface, Advanced Energy Materials, 13(44), 2302941. (IF=27.8)* https://doi.org/10.1002/aenm.202302941

2. Effects of Alkaline Earth Metal Doping on Garnet Li7La3Zr2O12, Results in Physics, 53, 106989 (IF=5.3)*

3. Efficiency Improvement of Narrow Bandgap Cu(In,Ga)(S,Se)2 Solar Cell with Alkali Treatment via Aqueous Spray Pyrolysis Deposition, ACS Applied Materials & Interfaces, 15, 23199-23207. (IF=9.5)* https://doi.org/10.1021/acsami.3c02362

4. Boosting internal quantum efficiency via ultrafast triplet exciton transfer in 2H-MoTe2 film, Science Advances, 9, eadg2324. (IF=13.6)

5. Identifying the relationships between subsurface absorber defects and the characteristics of kesterite solar cells, Carbon Energy, e336.(IF=20.5)* doi:10.1002/cey2.336

6. High efficiency CZTSSe solar cells enabled by dual Ag-passivation approach via aqueous solution process, Journal of Energy Chemistry, 77, 239-246. (IF=13.1) * https://doi.org/10.1016/j.jechem.2022.10.004

1. Study of Co-Doping Effects of Ta5+ and Ga3+ on Garnet Li7La3Zr2O12,   ACS Omega, 7, 47265-47273. (IF=4.132)* 

2. Overcoming the limitation of low bandgap Cu2ZnSn(S,Se)4 devices under indoor light conditions: From design to prototype IoT application, Journal of Materials Chemistry A, 10, 23831-23842  (IF=14.511)

3. High Efficiency Aqueous Solution Sprayed CIGSSe Solar Cells: Effects of Zr4+-Alloyed In2S3 Buffer and K-Alloyed CIGSSe Absorber, Advanced Functional Materials, 32, 2206561. (IF=19.924 )* https://doi.org/10.1002/adfm.202206561 

4. Spray-coated nanocrystalline CsPbBr3 perovskite thin-films for large area and efficient rigid and flexible light emitting diodes, Journal of Alloys and Compounds, 918, 165560. (IF=6.371)*  

5. Fabrication of in situ alkali doped flexible CIGSSe solar cells by using aqueous spray deposition, Curr. Appl. Phys. 41, 66-72. (IF=2.856)*

6. Effects of Potassium Treatment on SnO2 Electron Transport Layers for Improvements of Perovskite Solar Cells, Solar Energy, 233, 353-362. (IF=7.188)*

7. Defect Passivation for Kesterite CZTSSe Solar Cells via In Situ Al2O3 Incorporation into the Bulk CZTSSe Absorber, Solar RRL, 6, 2100862. (IF=9.173)* https://doi.org/10.1002/solr.202100862*

1. Insights into High-Efficiency Ag-alloyed CZTSSe Solar Cells Fabricated through Aqueous Spray Deposition Method, ACS Applied Materials & Interfaces , 13,45426-45434. (IF= 9.229 )*

2. Sodium Effects on the Diffusion, Phase, and Defect Characteristics of Kesterite Solar Cells and Flexible Cu2ZnSn(S,Se)4 with Greater than 11% Efficiency, Advaced Functional Materials, 2021, 2102238. (IF= 18.8)

3. Morphology Control of CsPbBr3 Thin-film by Diffusion Controlled Crystallization for Metal Halide Perovskite Light Emitting Diodes, Journal of Industrial and Engineering Chemistry, 97, 417-425 (IF=5.278 )

4. Influence of reaction pathway on the defect formation in Cu2ZnSnSe4 thin film, ACS Appl. Mater. Interfaces, 13, 11, 13425–13433. (IF= 9.229 )

5. Surface and Interface Engineering for Highly Efficient Cu2ZnSnSe4 Thin Film Solar Cells Via In-Situ Formed ZnSe Nanoparticle, Journal of Materials Chemistry A, 9, 5442-5453.  (IF=12.732)

1. Achieving Over 4% Efficiency for SnS/CdS Thin-Film Solar Cells by Improving Heterojunction Interface Quality, Journal of Mterials Chemistry A, 8, 20658-20665. (IF=11.301)*

2. Control of defect states of kesterite solar cell to achieve more than 11 % power conversion efficiency, ACS Applied Energy Materials,  3, 9, 8500–8508. (I.F=4.473)*

3. Characteristic material parameters of CIGS solar cell related with device performance, Current Applied Physics, 20, 1237-1243 (IF=2.281) *    

4. Over 11 % efficient eco-friendly kesterite solar cell: effects of S-enriched surface of Cu2ZnSn(S,Se)4 absorber and band gap controlled (Zn,Sn)O buffer, Nano Energy 78, 105206 (IF=16.602)*

5. Investigation of low intensity light performances of Kesterite CZTSe, CZTSSe, CZTS thin film solar cells for indoor application, Journal of Materials Chemistry A 8, 14538–14544  (IF=11.301)

6. Copper-based etalon filter using antioxidant graphene layer, Nanotechnology 31, 445206 (IF=3.551)

7. Application of Sn4+ doped In2S3 thin film to CIGS solar cell as a buffer layer, Sustainable Energy and Fuels 4, 362-368. (IF=5.503)*

1. Sulfur-Alloying Effects on Cu(In,Ga)(S,Se)2 Solar Cell Fabricated by Using Aqueous Spray Pyrolysis, ACS Applied Materials & Interfaces 11,45702-45708. (IF=8.456)*

2. Flexible high-efficiency CZTSSe solar cells on stainless-steel substrates, Journal of Materials Chemistry A 7, 24891-24899 (IF= 10.733)

3. Modified Stack Layer for Two-Step Process for High Efficiency CZTSe Solar Cell, Journal of the Korean Physical Society 75(9), 735~741.(IF= 0.63)*

4. Device Characteristics of Bandgap Tailored 10.04% Efficient CZTSSe Solar Cells Sprayed from Water Based Solution, ACS Applied Materials & Interfaces 11, 36735-36741. (IF= 8.456)*

5. Flexible Cu2ZnSn(S,Se)4 solar cells over 10% efficiency and methods of enlarging the cell area, Nature Comm. 10, 2959 (IF= 11.878)

6. The characteristics of Cu(In, Ga)Se2 thin-film solar cells by bandgap grading, Journal of Industrial and Engineering Chemistry 76, 437-442. (IF= 4.978)

7. Improvement of Ga distribution with Sb incorporation for two-step low temperature processing of CIGSe thin film solar cells, Solar Energy Materials and Solar Cells 194, 244-251.  (IF= 6.019)*

1. Fabrication and characterization of Cu3SbS4 solar cell with Cd-free buffer, Journal of the Korean Physical Society 73, 1794. (IF= 0.63)*

2. Effect of crystal orientation and conduction band grading of absorber on efficiency of low temperature grown Cu(In,Ga)Se2 solar cells on flexible polyimide foil, Advanced Energy Materials 8, 1801501. (IF= 24.884)*

3. Sprayed Cu2ZnSn(S,Se)4 solar cells with controlled S/(S+Se) ratio, J. of Nanoelectronics and Optoelectronics, 13, 1725-1728. (IF= 1.069)*

4. Pyroprotein-based electronic textiles with high thermal durability, Materials Today 21, 944. (IF= 24.372)

5. The alteration of carrier separation in kesterite solar cells, Nano Energy 52, 38-53. (IF= 15.548)

6. Existence of multiple phases and defect states of SnS absorber and its detrimental effect on efficiency of SnS solar cell, Current Applied Physics 18, 663-666 (IF= 2.01)*

7. Characterization of CBO and defect states of CZTSe solar cells prepared by using two-step process, Current Applied Physics 18, 191-199. (IF= 2.01)*

8. Limiting effects of conduction band offset and defect states on high efficiency CZTSSe solar cell, Nano Energy 45, 75-83. (IF= 15.548)*

1. Cu(In,Ga)Se2 solar cells with In2S3 buffer layer deposited by thermal evaporation, Journal of the Korean Physical Society, 71, 1012-1018. *

2. Cd-reduced Hybrid Buffer Layer of CdS/Zn(O,S) for Environment-friendly CIGS Solar Cell, Sustainable Energy and Fuels 1, 1981-1990. *

3. Fabrication and device characterization of potassium fluoride solution treated CZTSSe solar cell, Current Applied Physics 17, 1353-1360.*

4. Precursor designs for Cu2ZnSn(S,Se)4 thin-film solar cells, Nano Energy 35, 52-61

5. Comparison of chalcopyrite and kesterite solar cells, Journal of Industrial and Engineering Chemistry 45, 78-84.

6. Improving the solar cell performance of electrodeposited Cu2ZnSn(S,Se)4 by varying the Cu/(Zn+Sn) ratio, Solar Energy 145, 13-19.

7. Tailoring the defects and carrier density for beyond 10% efficient CZTSe thin film solar cells, Solar Energy Materials and Solar Cells 159, 447-455.

1. Phase engineering of CBD grown tin sulfide films by post-sulfurization and solar cell application, Current Applied Physics 16 (12), 1666-1673*

2. Application of slope-polishing technique for depth profile of selenized CIGS by micro-Raman spectroscopy, Applied Surface Science 379, PP.186~190 , 2016.08.30.

3. Silver Nanowires Binding with Sputtered ZnO to Fabricate Highly Conductive and Thermally Stable Transparent Electrode for Solar Cell Applications, ACS Applied Materials & Interfaces 8 , PP.12764~12771 , 2016.05.05.*

4. Fabrication of band gap tuned Cu 2 Zn (Sn 1-x Ge x)(S, Se) 4 absorber thin film using nanocrystal-based ink in non-toxic solvent, Journal of Alloys and Compounds 675, 370-376*

5. Ge-Alloyed CZTSe Thin Film Solar Cell Using Molecular Precursor Adopting Spray Pyrolysis Approach, RSC Advances  44 , PP.37621~37627 , 2016.03.30.*

6. Effects of Ge Alloying on Device Characteristics of Kesterite-Based CZTSSe Thin Film Solar Cells, Journal of Physical Chemistry C 120(8) , PP.4251~4258 , 2016.02.12.*

7. Novel chemical route for chemical bath deposition of Cu2ZnSnS4 (CZTS) thin films with stacked precursor thin films, Materials Letters 162 , PP.40~43 , 2016.01.01.*

1. Effects of the compositional ratio distribution with sulfurization temperatures in the absorber layer on the defect and surface electrical characteristics of Cu2ZnSnS4 solar cells, Progress in Photovoltaics 23, PP.1771~1784 , 2015.12.01.

2. Sulfur stoichiometry driven chalcopyrite and pyrite structure of spray pyrolyzed Cu-alloyed FeS2 thin films, Materials Science in Semiconductor Processing 40 , PP.325~330 , 2015.12.01.

3. Non-toxic precursor solution route for fabrication of CZTS solar cell based on all layers solution processed, Journal of Alloys and Compounds 646, PP.497~502 , 2015.10.15. *

4. Structural, Optical and Electrical Properties of Cu2FeSnX4 (X=S, Se) Thin Films Synthesized by Chemical Spray Pyrolysis, Journal of Alloys and compounds 638, PP.103~108 , 2015.07.25.*

5. Effects of Na and MoS2 on Cu2ZnSnS4 thin-film solar cell, Progress in Photovoltaics 23, PP.862~873 , 2015.07.01.

6. Planar CH 3 NH 3 PbI 3 Perovskite Solar Cells with Constant 17.2% Average Power Conversion Efficiency Irrespective of the Scan Rate, Advanced Materials 27, PP.3424~3430 , 2015.06.10.    

7. A Nonvacuum Approach for Fabrication of Cu2ZnSnSe4/In2S3 Thin Film Solar Cell and Optoelectronic Characterization, Journal of Physical Chemistry C 119, PP.12226~12235 , 2015.06.04.*

8. Nanostructured p-type CZTS thin films prepared by a facile solution process for 3D p?n junction solar cells, Nanoscale 7 , PP.11182~11189 , 2015.05.22.

9. Wet chemical synthesis of WO3 thin films for supercapacitor application, Korean Journal of Chemical Engineering 32(5) , PP.974~979 , 2015.05.15.

10. Properties of the chalcogenide-carbon nano tubes and graphene composite materials, Journal of Alloys and compounds 627, PP.468~475 , 2015.04.05.

11. Band Gap Engineering of Alloyed Cu2ZnGexSn1-xQ4 (Q = S,Se) Films for Solar Cell, Journal of Physical Chemistry C 119 , PP.1706~1713 , 2015.01.29. *

1. NO2 sensing properties of nanostructured tungsten oxide thin films, Ceramics International 40(10) , PP.16495~16502 .

2. Creating intermediate bands in ZnTe via co-alloying approach, Applied Physics Express , 7(12) , PP.1~4. *

3. Nanoscale Amorphization of GeTe Nanowire with Conductive Atomic Force Microscope, Journal of nanoscience and Nanotechnology , 14 , PP.7688~7692.*

4. Highly selective and sensitive CdS thin film sensors for detection of NO2 gas, RSC Advances 4(84), PP.44547~44554.

5. Structural Transition and Band Gap Tuning of Cu-2(Zn,Fe)SnS4 Chalcogenide for Photovoltaic Application, Journal of Physical Chemistry C  118(26) , PP.14227~14237.*

6. Study of In-x(O,OH,S)(y) buffer layer effect on CIGSe thin film solar cells, Current Applied Physics, 14(1), PP.S17~S22.*

7. Direct imaging of enhanced current collection on grain boundaries of Cu(In,Ga)Se2 solar cells, Applied Physics Letters , 104(6), PP.63902. *

1. Effect of selenization on sprayed Cu2ZnSnSe4 thin film solar cell, Thin Solid Films 547(29), PP.178~180 .*

2. Study of structural and optical properties of kesterite Cu2ZnGeX4 (X = S, Se) thin films synthesized by chemical spray pyrolysis, CRYSTENGCOMM 15(48), PP.10500~10509 .*

3. Structural analysis of Cu(In,Ga)Se-2 films fabricated by using sputtering and post-selenization, Current Applied Physics, 13(13), PP.1046~1049.*

1. Sulfurization temperature effects on the growth of Cu2ZnSnS4 thin film, Current Applied Physics, 12(4), PP.1052~1057.* 

2. Effect of cu ratio on the growth of sprayed Cu2ZnSnS4 film, Journal of the Korean Physical Society, 60(12), PP.2013~2017.*

3. Fabrication of CIGS thin films by using spray pyrolysis and post-selenization, Journal of the Korean Physical Society, 60(12), PP.2018~2024 .*

1. Growth of Cu2ZnSnS4 Films by Sputtering with Post-Sulfurization, AIP Conference Proceedings , 1399, PP.157~158.*

2. Deposition of CuInS2 films by electrostatic field assisted ultrasonic spray pyrolysis, Solar Energy Materials and Solar Cells , 95(1), PP.245~249.*

3. Comparative Study of Cu2ZnSnS4 Film Growth, Solar Energy Materials and Solar Cells , 95(1) , PP.239~244.*

4. Structural analysis of CIGS film prepared by chemical spray deposition, Current Applied Physics , 11(1), PP.88~92.*

5. Growth of Inx(S, O, OH)y Films by Chemical Bath Deposition, Current Applied Physics , 11(1), PP.81~87.*

1. Growth of sprayed CIS film and post-sulfurization effects, Conference Record of the IEEE Photovoltaic Specialists Conference , PP.3443~3445.*

2. Growth of Cu2ZnSnS4 thin films using sulfurization of stacked metallic films, Thin Solid Films , 518(22), PP.6567~6572.*

3. Characterization of sprayed CuInS2 films by XRD and Raman spectroscopy measurements, Thin Solid Films , 518(22), PP.6537~6541.*

4. Spray Deposition of Chalcogenide Thin Films, Journal of the Korean Physical Society , 57(6), PP.1600~1604 .*

5. Nanoscale Crystallization of Phase Change Ge2Sb2Te5 Film with AFM Lithography, Scanning , 32, PP.320~326.*

1. Chalcogen-based thin film transistor using CuInSe2 photo-active layer, Current Applied Physics (2009) DOI: 10.1016/J.CAP.2009.01.0

2. Growth of CuInS2 Films by Using Spray Pyrolysis, Journal of the Korean Physical Society (2008) DOI: 10.3938/JKPS.53.2453 *

3. Chalcogenide thin-film transistors using oxygenated n-type and p-type phase change materials, Applied Physics Letters, (2008) DOI: 10.1063/1.2963401

4. Growth of ZnS films and post-annealing effects, Journal of the Korean Physical Society (2008) DOI: 10.3938/JKPS.53.331 *

5. Recent progress of nano-technology with NSOM, Micron (2007) DOI: 10.1016/J.MICRON.2006.06.010 *

6. Optical and electrical properties of high and low resistive CuInSe2 films: A potential photoactive channel for chalcogen photo thin film transistor, IEEE NMDC 2006: IEEE NANOTECHNOLOGY MATERIALS AND DEVICES CONFERENCE PROCEEDINGS  (2006) DOI: 10.1109/NMDC.2006.4388897 

7. Enhanced surface evolution induced by the molecular desorption in dodecanethiol self-assembled monolayer on Au(111), Surface Science (2006) DOI: 10.1016/J.SUSC.2005.11.014

8. Simulation study on heat conduction of a nanoscale phase-change random access memory cell, Journal of Nanoscience and Nanotechnology (2006) DOI: 10.1166/JNN.2006.17963 *

9. Enhanced surface evolution induced by the molecular desorption in dodecanethiol self-assembled monolayer on Au(111),  Feb 1, 2006 |Surface Science 

10. Current flow through different phases of dodecanethiol self-assembled monolayer , May 20, 2005 |Surface Science 

11. Fabrication of metallic nano-protrusion for a recording mark , Jan 1, 2005 |Journal of the Korean Physical Society 

12. Frequency response separation scheme for non-contact type atomic force microscope , Oct 1, 2004 |Sensors and Actuators A: Physical 

13. Nondestructive interactions of carbon nanotubes with Bi2Sr2CaCu2O8 , Apr 1, 2004 Physica C: Superconductivity and its Applications 

14. Signatures of bilayer splitting in the c-axis optical conductivity of double layer cuprates , Mar 15, 2004 |Physical Review B 

15. Local excitation of surface plasmon in structured Au films by atomic force anodic oxidation , Jan 1, 2004 |Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 

1. Scanning near-field optical microscope study of Ag nanoprotrusions fabricated by nano-oxidation with atomic force microscope,  Dec 10, 2003 |Japanese Journal of Applied Physics 

2. Superconductivity of NbSe2 samples subjected to electron irradiation , Nov 1, 2003 |Physica C: Superconductivity and its Applications 

3. Fabrication of a high-throughput cantilever-style aperture tip by the use of the bird's-beak effect , Jul 15, 2003 |Japanese Journal of Applied Physics 

4. Transport and noise properties of ramp-edge junction, Jun 1, 2003 |IEEE Transactions on Applied Superconductivity 

5. Near-field imaging of surface plasmon on gold nano-dots fabricated by scanning probe lithography, Mar 18, 2003 |Journal of Microscopy 

6. Fabrication and voltage divider operation of a T flip-flop, using high-T-c interface-engineered Josephson junctions*, Aug 2, 2002 |Superconductor Science and Technology 

7. Resonant photoemission spectroscopy of the quenched superconductivity system: Y1-xPrxBa2Cu3O7-delta single crystals, Aug 1, 2002 |Physical Review B   

8. High-resolution transmission electron microscopic observation of highly dense MgB2 superconductors , Oct 1, 2001 |Superconductor Science and Technology 

9. Effect of electronic irradiation in the production of NbSe2 nanotubes, Apr 15, 2001 |Fullerene Science and Technology 

10. Fabrication of RS flip-flops using Y-Ba-Cu-O ramp-edge junctions and their operation , Mar 1, 2001 |IEEE Transactions on Applied Superconductivity 

11. Fabrication of interface-controlled Josephson junctions using Sr2AlTaO6 insulating layers , Mar 1, 2001 |IEEE Transactions on Applied Superconductivity 

12. Measurements of magnetoresistivity and magnetization of Sr2RuO4 single crystals , Nov 1, 2000 |Physica C: Superconductivity and its Applications 

13. Flux pinning effect of embedded carbon nanotubes in Bi2Sr2CaCu2O8 , Nov 1, 2000 |Physica C: Superconductivity and its Applications 

14.  Textures of CeO2 films grown on biaxially textured Pt0.7Pd0.3 substrates, Jul 1, 1999 |Thin Solid Films 

15. Comparative study on the crack formations in the CeO2 buffer layers for YBCO films on textured Ni tapes and Pt tapes, Nov 1, 1998 |Physica C: Superconductivity and its Applications 

16. Diffusion bonding of the textured Ni tapes for the substrate of YBCO coated conductors , Sep 1, 1998 |Physica C: Superconductivity and its Applications 

17. Fabrication of a cylindrically textured YBCO film on a YSZ cylinder and its critical currents ,Aug 1, 1997 |Physica C: Superconductivity and its Applications 

18. Growth conditions of c-axis normal Y1Ba2Cu3O7-delta thin films on 20 degrees tilted crystalline substrates, Aug 1, 1997 |Thin Solid Films 

19. Growth conditions of textured YBCO films on a cylindrically curved surface of a YSZ substrate,Jun 1, 1997 |IEEE Transactions on Applied Superconductivity 

20. Growth of textured c-axis normal Y1Ba2Cu3O7-delta thin films on yttria-stabilized zirconia substrates with crystalline axes tilted with respect to the surfaces ,Feb 1, 1997 |Physica C: Superconductivity and its Applications 

21. Low-amgle biepitaxial Josephson-junction fabricated on obliquely cut SrTiO3 substrate,Sep 1, 1995 |Physica C: Superconductivity and its Applications , v.251, no.3-4, pp.399 - 404