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학술지 Color Tuning in Cu(In,Ga)Se2 Thin-film Solar Cells by Controlling Optical Interference in Transparent Front Layers
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저자
조대형, 이우정, 김명언, 신병하, 정용덕
발행일
202008
출처
Progress in Photovoltaics : Research and Applications, v.28 no.8, pp.798-807
ISSN
1062-7995
출판사
Wiley
DOI
https://dx.doi.org/10.1002/pip.3272
협약과제
20JB1900, 무독성 버퍼층을 갖는 다색 플렉서블 박막 태양전지 기술 개발, 정용덕
초록
Aesthetic factors such as colorization in harmony with the surrounding environment are becoming important in the field of applied photovoltaics. Therefore, there exists a need to realize colors in solar cells, with minimum additional cost and efficiency loss. We tuned the color of Cu(In,Ga)Se2 thin-film solar cells by controlling the optical interference between the sputtered Zn(O,S) buffer layer and indium tin oxide (ITO) transparent electrode layer, which are intrinsic components of the solar cell device, without any additional process and/or material. The nontoxic Cd-free buffer layer was prepared in consideration of the environmental factor. In order to minimize the degradation of the photovoltaic performance of the solar cell, the experiment was conducted within the thickness (optical path length) of the Zn(O,S) and ITO transparent front layers, which affected the solar cell performance more optically and less electrically. As the antireflection coating thickness increased, the solar cell was calculated to have a wider color range, lower luminosity, and lower JSC loss. Relatively even efficiencies were obtained with a wide color range.
키워드
CIGS thin-film solar cell, color, nontoxic Cd-free buffer, optical interference, transparent front layer
KSP 제안 키워드
Cd-free buffer layer, Coating Thickness, Electrode layer, Environmental factor(E-factor), Indium tin oxide (ITO) transparent electrode, Optical path length, Solar cell performance, Surrounding environment, Thin film solar cells, antireflection coating, color tuning