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용액 공정으로 만든 Cu(In,Ga)S<sub>2</sub> 박막태양전지의 전기적 특성
김지은,민병권,김동욱,Kim, Ji Eun,Min, Byoung Koun,Kim, Dong-Wook 한국태양광발전학회 2014 Current Photovoltaic Research Vol.2 No.2
We investigated current-voltage (I-V) and capacitance (C)-V characteristics of solution-processed thin film solar cells, consisting of $Cu(In,Ga)S_2$ and $CuInS_2$ stacked absorber layers. The ideality factors, extracted from the temperature-dependent I-V curves, showed that the tunneling-mediated interface recombination was dominant in the cells. Rapid increase of both series- and shunt-resistance at low temperatures would limit the performance of the cells, requiring further optimization. The C-V data revealed that the carrier concentration of the $CuInS_2$ layer was about 10 times larger than that of the $Cu(In,Ga)S_2$ layer. All these results could help us to find strategies to improve the efficiency of the solution-processed thin film solar cells.
용액 공정으로 만든 Cu(In,Ga)S₂ 박막태양전지의 전기적 특성
김지은(Ji Eun Kim),민병권(Byoung Koun Min),김동욱(Dong-Wook Kim) 한국태양광발전학회 2014 Current Photovoltaic Research Vol.2 No.2
We investigated current-voltage (I-V) and capacitance (C)-V characteristics of solution-processed thin film solar cells, consisting of Cu(In,Ga)S₂ and CuInS₂ stacked absorber layers. The ideality factors, extracted from the temperature-dependent I-V curves, showed that the tunneling-mediated interface recombination was dominant in the cells. Rapid increase of both series- and shuntresistance at low temperatures would limit the performance of the cells, requiring further optimization. The C-V data revealed that the carrier concentration of the CuInS₂ layer was about 10 times larger than that of the Cu(In,Ga)S₂ layer. All these results could help us to find strategies to improve the efficiency of the solution-processed thin film solar cells.
황윤정 ( Yun Jeong Hwang ),민병권 ( Byoung Koun Min ),정광덕 ( Kwang Deog Jung ) 한국공업화학회 2013 공업화학전망 Vol.16 No.4
인공광합성은 에너지 및 화학자원을 물과 이산화탄소로부터 생산하는 순환형 에너지?화학자원 생산기술이라고 할 수 있다. 아직은 기초수준단계의 기술이나 선진국에서는 막대한 연구비를 투자하는 미래의 신성장동력원이될 수 있는 기술로 기대되고 있다. 이 분야는 유기화학, 무기화학, 물리화학, 전기화학, 생화학, 바이오공학, 재료공학, 화학공학등 다양한 분야를 포괄하는 기술이다. 여기서는 전지시스템 및 입자시스템을 기반으로 한 인공광합성기술의 최근 동향을 소개하였다.
레이져를 이용한 도핑 특성과 선택적 도핑 에미터 실리콘 태양전지의 제작
박성은(Sungeun Park),박효민(Hyomin Park),남정규(Junggyu Nam),양정엽(JungYup Yang),이동호(Dongho Lee),민병권(Byoung Koun Min),김경남(Kyung Nam Kim),박세진(Se Jin Park),이해석(Hae-Seok Lee),김동환(Donghwan Kim),강윤묵(Yoonmook Kang),김동 한국태양광발전학회 2016 Current Photovoltaic Research Vol.4 No.2
Laser-doped selective emitter process requires dopant source deposition, spin-on-glass, and is able to form selective emitter through SiNx layer by laser irradiation on desired locations. However, after laser doping process, the remaining dopant layer needs to be washed out. Laser-induced melting of pre-deposited impurity doping is a precise selective doping method minimizing addition of process steps. In this study, we introduce a novel scheme for fabricating highly efficient selective emitter solar cell by laser doping. During this process, laser induced damage induces front contact destabilization due to the hindrance of silver nucleation even though laser doping has a potential of commercialization with simple process concept. When the laser induced damage is effectively removed using solution etch back process, the disadvantage of laser doping was effectively removed. The devices fabricated using laser doping scheme power conversion efficiency was significantly improved about 1% abs. after removal the laser damages.