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Wei, Jian; Xu, Rui‐Peng; Li, Yan‐Qing; Li, Chi; Chen, Jing‐De; Zhao, Xin‐Dong; Xie, Zhong‐Zhi; Lee, Chun‐Sing; Zhang, Wen‐Jun; Tang, Jian‐Xin
Advanced energy materials, October 25, 2017, Letnik: 7, Številka: 20Journal Article
Light management holds great promise of realizing high‐performance perovskite solar cells by improving the sunlight absorption with lower recombination current and thus higher power conversion efficiency (PCE). Here, a convenient and scalable light trapping scheme is demonstrated by incorporating bioinspired moth‐eye nanostructures into the metal back electrode via soft imprinting technique to enhance the light harvesting in organic–inorganic lead halide perovskite solar cells. Compared to the flat reference cell with a methylammonium lead halide perovskite (CH3NH3PbI3−xClx) absorber, 14.3% of short‐circuit current improvement is achieved for the patterned devices with moth‐eye nanostructures, yielding an increased PCE up to 16.31% without sacrificing the open‐circuit voltage and fill factor. The experimental and theoretical characterizations verify that the cell performance enhancement is mainly ascribed by the broadband polarization‐insensitive light scattering and surface plasmonic effects due to the patterned metal back electrode. It is noteworthy that this light trapping strategy is fully compatible with solution‐processed perovskite solar cells and opens up many opportunities toward the future photovoltaic applications. A convenient and scalable light trapping scheme is demonstrated to enhance the light harvesting in organic–inorganic lead halide perovskite solar cells, which is realized by incorporating bioinspired moth‐eye nanostructures into the metal back electrode via soft imprinting technique. The efficiency is enhanced to 16.3% due to self‐enhanced absorption by broadband polarization‐insensitive light scattering and surface plasmonic effect.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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