Uniform CH3NH3PbI3-xBrx film for efficient planar perovskite solar cells via facile PbBr2 pre-coating layer treatment

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

1 Scopus Citations
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Author(s)

  • Zhanfeng Li
  • Jinbo Chen
  • Jingkun Ren
  • Qinjun Sun
  • Hua Wang
  • And 2 others
  • Junsheng Yu
  • Yuying Hao

Detail(s)

Original languageEnglish
Pages (from-to)366-372
Journal / PublicationOrganic Electronics: physics, materials, applications
Volume62
Online published20 Aug 2018
Publication statusPublished - Nov 2018

Abstract

Organometal halide perovskite solar cells (PSCs) have demonstrated exceptional, unparalleled progress in solar cell performance by optimizing the perovskite film morphology, composition, interfaces, and charge collection efficiency. In this work, a PbBr2 pre-coating layer (PCL) was employed to effectively fabricate a relatively uniform composition perovskite film with large crystal sizes and no voids. We demonstrated that carrier recombination is reduced and charge collection is improved by the interface and interior passivation in PSCs fabricated with PCL process, which leads to a striking enhancement in open-circuit voltage and short circuit current. As a result, a promising power conversion efficiency of 17.38%, showing more than 10% enhancement over the reference devices, was realized in the passivated invert planar PSCs with negligible hysteresis and stable photocurrent output. This study gives a novel compositional passivation process to produce high-efficiency halide PSCs with improved process reproducibility.

Research Area(s)

  • Compositional engineering passivation, Perovskite solar cells, Pre-coating layer, Uniform CH3NH3PbI3-xBrx film

Citation Format(s)

Uniform CH3NH3PbI3-xBrx film for efficient planar perovskite solar cells via facile PbBr2 pre-coating layer treatment. / Li, Zhanfeng; Chen, Jinbo; Ren, Jingkun; Sun, Qinjun; Wang, Hua; Yu, Junsheng; Hao, Yuying.

In: Organic Electronics: physics, materials, applications, Vol. 62, 11.2018, p. 366-372.

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