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학술지 Colored a-Si:H Transparent Solar Cells Employing Ultrathin Transparent Multi-layered Electrodes
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저자
임정욱, 김가영, 신명훈, 윤선진
발행일
201704
출처
Solar Energy Materials & Solar Cells, v.163, pp.164-169
ISSN
0927-0248
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.solmat.2017.01.017
협약과제
16PB6700, 양면발전 효율 8.5 % 및 투과도 20%를 갖고 다양한 색상 구현이 가능한 박막 실리콘 기반의 완전투광형 투명 태양전지 기술 개발, 임정욱
초록
We fabricated hydrogenated amorphous silicon (a-Si: H) transparent solar cells using ultrathin transparent multi-layered electrodes (TMEs) as rear-side transparent electrodes for building-integrated photovoltaic (BIPV) windows. Each TME included a bottom layer, thin Ag layer, and optoelectronic controlling layer (OCL). The TMEs were experimentally designed to have high transparency and conductance. The fabricated a-Si:H transparent solar cells showed optimal performance with a 6.36% power-conversion efficiency and 23.5% average transmittance (500??800 nm) when TMEs with a thickness less than 160 nm were incorporated. We demonstrated that the reflection color of the cell could be tuned without serious loss of cell efficiency by varying the thickness of the OCL. The backside colors were predicted to be the coordinates on a CIE 1931 chromaticity diagram using the reflection spectrum from the cell and emission spectrum of a 50 W LED light source. The developed a-Si:H transparent solar cells exhibited high efficiency and show feasibility for incorporating various colors in the photovoltaic and aesthetic functionalities of BIPV windows.
키워드
A-Si:H, Building-integrated photovoltaic, Multi-layered electrode, Ultrathin transparent electrode
KSP 제안 키워드
Ag layer, Building-integrated photovoltaics, CIE 1931 chromaticity diagram, Cell Efficiency, Conversion efficiency(C.E.), High transparency, LED light source, Layered electrode, Reflection spectrum, Various colors, a-Si:H