Hierarchical Dual-Scaffolds Enhance Charge Separation and Collection for High Efficiency Semitransparent Perovskite Solar Cells

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Shuang Xiao
  • Haining Chen
  • Fangyuan Jiang
  • Yang Bai
  • Teng Zhang
  • Xiaoli Zheng
  • Guoyu Qian
  • Chen Hu
  • Yinhua Zhou
  • Yongquan Qu
  • Shihe Yang

Detail(s)

Original languageEnglish
Article number1600484
Journal / PublicationAdvanced Materials Interfaces
Volume3
Issue number17
Online published5 Jul 2016
Publication statusPublished - 6 Sept 2016
Externally publishedYes

Abstract

Organometal halide perovskite solar cells (PSCs) have shown much promise to be made semitransparent (ST) for a variety of applications. However, charge separation and collection are still inefficient from the ultrathin absorber layer and thus limit the ST-PSCs performance. Herein a type of hierarchical dual scaffolds is first reported to tackle this problem consisting of a quasi-mesoscopic inorganic (TiO2) layer and a percolating organic (phenyl-C61-butyric acid methyl ester) manifold throughout the capped or filled perovskite bulk. It is demonstrated that the soft PCBM scaffold affords efficient charge separation due to the formation of a penetrating network intimately interfaced with perovskite crystals, meanwhile the quasi-mesoporous hard TiO2 scaffold strongly based on the substrate further offers a continuous electron transport. As a result, the ST-PSCs based on the ultrathin perovskite layer (≈100 nm) with the dual-scaffolds have achieved an internal quantum efficiency of ≈100%, boosting the device efficiency to 12.32%. Furthermore, the real ST-PSCs fabricated by replacing the Ag electrode with a PEDOT:PSS transparent electrode have reached an efficiency of 8.21% with an average visible transmittance of 23%, placing among the highest performing devices of the kind reported to date.

Research Area(s)

  • charge transport, hierarchical structures, hybrid materials, perovskite solar cell, semitransparent solar cell

Citation Format(s)

Hierarchical Dual-Scaffolds Enhance Charge Separation and Collection for High Efficiency Semitransparent Perovskite Solar Cells. / Xiao, Shuang; Chen, Haining; Jiang, Fangyuan et al.
In: Advanced Materials Interfaces, Vol. 3, No. 17, 1600484, 06.09.2016.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review