题目：

Enhanced Light Harvesting in Perovskite Solar Cells by a Bioinspired Nanostructured Back Electrode

作者：

Jian Wei,¹ Rui-Peng Xu,¹ Yan-Qing Li,^1,* Chi Li,¹ Jing-De Chen,¹ Xin-Dong Zhao,¹ Zhong-Zhi Xie,¹ Chun-Sing Lee,^2,* Wen-Jun Zhang,³ and Jian-Xin Tang^1,*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China

²Center of Super-Diamond and Advanced Film (COSADF), Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China

³Center of Super-Diamond and Advanced Film (COSADF), Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, China

摘要：

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 (CH₃NH₃PbI_3-xCl_x) 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.

影响因子：

16.721

分区情况：

一区

链接：

http://onlinelibrary.wiley.com/doi/10.1002/aenm.201700492/full