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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

24 Scopus Citations
View graph of relations

Author(s)

  • Jian Wei
  • Rui-Peng Xu
  • Yan-Qing Li
  • Chi Li
  • Jing-De Chen
  • Xin-Dong Zhao
  • Zhong-Zhi Xie
  • Jian-Xin Tang

Detail(s)

Original languageEnglish
Article number1700492
Journal / PublicationAdvanced Energy Materials
Volume7
Issue number20
Early online date12 Jul 2017
Publication statusPublished - 25 Oct 2017

Abstract

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.

Research Area(s)

  • grating, light harvesting, light trapping, moth-eye nanostructures, perovskite solar cells

Citation Format(s)

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

In: Advanced Energy Materials, Vol. 7, No. 20, 1700492, 25.10.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review