High-Performance Flexible Photodetectors based on High-Quality Perovskite Thin Films by a Vapor–Solution Method

Wei Hu, Wei Huang, Shuzhen Yang, Xiao Wang, Zhenyu Jiang, Xiaoli Zhu, Hong Zhou, Hongjun Liu, Qinglin Zhang, Xiujuan Zhuang, Junliang Yang, Dong Ha Kim, Anlian Pan

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

Organometal halide perovskites are new light-harvesting materials for lightweight and flexible optoelectronic devices due to their excellent optoelectronic properties and low-temperature process capability. However, the preparation of high-quality perovskite films on flexible substrates has still been a great challenge to date. Here, a novel vapor–solution method is developed to achieve uniform and pinhole-free organometal halide perovskite films on flexible indium tin oxide/poly(ethylene terephthalate) substrates. Based on the as-prepared high-quality perovskite thin films, high-performance flexible photodetectors (PDs) are constructed, which display a nR value of 81 A W−1 at a low working voltage of 1 V, three orders higher than that of previously reported flexible perovskite thin-film PDs. In addition, these flexible PDs exhibit excellent flexural stability and durability under various bending situations with their optoelectronic performance well retained. This breakthrough on the growth of high-quality perovskite thin films opens up a new avenue to develop high-performance flexible optoelectronic devices.

Original languageEnglish
Article number1703256
JournalAdvanced Materials
Volume29
Issue number43
DOIs
StatePublished - 20 Nov 2017

Keywords

  • flexible perovskite photodetectors
  • organometal halide perovskites
  • thin-film photodetectors

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