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P1 Laser Scribing Process Optimization for Indium Tin Oxide Substrates
Vijay C. Karade,Saewoong Kim(김세웅),Inyoung Jeong(정인영),Min Jae Ko(고민재),Joo Hyung Park(박주형),Jun-Sik Cho(조준식),Inchan Hwang(황인찬),Jihye Gwak(곽지혜),Santosh S. Sutar,Tukaram D. Dongale,Jae Ho Yun(윤재호),Kihwan K 한국태양에너지학회 2024 한국태양에너지학회 학술대회논문집 Vol.2024 No.4
Bandgap Engineering in CZTSSe Thin Films via Controlling S/(S+Se) Ratio
Vijay C. Karade,Jun Sung Jang,Kuldeep Singh Gour,Yeonwoo Park,Hyeonwook Park,Jin Hyeok Kim,윤재호 한국태양광발전학회 2023 Current Photovoltaic Research Vol.11 No.3
The earth-abundant element-based Cu2ZnSn(S,Se)4 (CZTSSe) thin film solar cells (TFSCs) have attracted greater attention in the photovoltaic (PV) community due to their rapid development in device power conversion efficiency (PCE) >13%. In the present work, we demonstrated the fine-tuning of the bandgap in the CZTSSe TFSCs by altering the sulfur (S) to the selenium (Se) chalcogenide ratio. To achieve this, the CZTSSe absorber layers are fabricated with different S/(S+Se) ratios from 0.02 to 0.08 of their weight percentage. Further compositional, morphological, and optoelectronic properties are studied using various characterization techniques. It is observed that the change in the S/(S+Se) ratios has minimal impact on the overall Cu/(Zn+Sn) composition ratio. In contrast, the S and Se content within the CZTSSe absorber layer gets altered with a change in the S/(S+Se) ratio. It also influences the overall absorber quality and gets worse at higher S/(S+Se). Furthermore, the device performance evaluated for similar CZTSSe TFSCs showed a linear increase and decrease in the open circuit voltage (Voc) and short circuit current density (Jsc) of the device with an increasing S/(S+Se) ratio. The external quantum efficiency (EQE) measured also exhibited a linear blue shift in absorption edge, increasing the bandgap from 1.056 eV to 1.228 eV, respectively.
Comparative Analysis of Laser Scribing and Optimization for Solar Cell Module Fabrication
Saewoong Kim,Vijay C Karade,Min Jae Ko,Soomin Song,Sangmin Lee,Ara Cho,In-Chan Hwang,Seung Kyu Ahn,Kihwan Kim,In-Young Jeong,Jin Soo Yoo,Jun Sik Cho,Sejin Ahn,Joo Hyung Park,Donghyeop Shin,Ahreum Lee 한국신재생에너지학회 2023 AFORE Vol.2023 No.11
Scribing of ITO/glass Substrate with Picosecond Laser
Saewoong Kim(김세웅),Vijay C. Karade,Soomin Song(송수민),Sangmin Lee(이상민),Ara Cho(조아라),In Chan Hwang(황인찬),Seung Kyu Ahn(안승규),Kihwan Kim(김기환),In-Young Jeong(정인영),Jin Soo Yoo(유진수),Jun Sik Cho(조준식),Sejin Ahn(안 한국신재생에너지학회 2023 한국신재생에너지학회 학술대회논문집 Vol.2023 No.6
Selective Scribing Of ITO/Glass Substrate with Picosecond Laser
Saewoong Kim(김세웅),Vijay C. Karade,Soomin Song(송수민),Sangmin Lee(이상민),Ara Cho(조아라),In Chan Hwang(황인찬),Seung Kyu Ahn(안승규),Kihwan Kim(김기환),In-Young Jeong(정인영),Jin Soo Yoo(유진수),Jun Sik Cho(조준식),Sejin Ahn(안 한국태양에너지학회 2023 한국태양에너지학회 학술대회논문집 Vol.2023 No.4