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학술지 Enhanced Electrical Conductivity of Transparent Electrode using Metal Microfiber Networks for Gridless Thin-film Solar Cells
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저자
조대형, 조홍석, 이우정, 김태건, 신병하, 윤석구, 정용덕
발행일
201909
출처
Solar Energy Materials & Solar Cells, v.200, pp.1-6
ISSN
0927-0248
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.solmat.2019.109998
협약과제
19JB1900, 무독성 버퍼층을 갖는 다색 플렉서블 박막 태양전지 기술 개발, 정용덕
초록
Improving the optical transmittance and electrical conductivity in transparent conductors (TC) has been a critical issue for decades due to their numerous applications. In this paper, we suggest an approach to produce extremely conductive TC material from electroplated Ni microfiber networks (NiMFs) in order to achieve highly efficient and aesthetically superior thin-film solar cells and modules. The high cross-sectional aspect ratio of NiMFs significantly enhanced their electrical conductivity and optical transmittance simultaneously. The TC structure employing NiMFs was a successful substitute for conventional patterned grids in Cu(In,Ga)Se2 thin-film solar cells because it reduced the series resistance, which is especially advantageous for large-area cells. The NiMF-induced transmittance loss was compensated for by the formation of a light diffusion layer on the NiMF. We propose that the excellent performance of NiMF TC materials enables the elimination or significant reduction of the grids in thin-film solar cells and modules.
키워드
Gridless, Ni fibers, Thin-film solar cells, Transparent electrodes
KSP 제안 키워드
Cross-sectional, Electrical conductivity(EC), Electroplated Ni, Enhanced electrical conductivity, Light diffusion, Ni fibers, Optical transmittance, Thin film solar cells, aspect ratio, diffusion layer, excellent performance