All-Inorganic Perovskite Nanowires-InGaZnO Heterojunction for High-Performance Ultraviolet-Visible Photodetectors

Mengxing Sun, Qiyi Fang, Zhepeng Zhang, Dan Xie*, Yilin Sun, Jianlong Xu, Weiwei Li, Tianling Ren, Yanfeng Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

Inorganic cesium lead halide perovskites have attracted intense interest in optoelectronic applications due to the relatively stable performance in air. However, most reported inorganic perovskite-based optoelectronic devices exhibit low photosensitivity, which greatly hinders their further applications. Here, we first demonstrate a hybrid optical structure, which combines the n-type thin-film InGaZnO and the all-inorganic perovskite nanowires of CsPbBr3 together. By this way, excellent optical and electrical properties such as a low dark current of 10-10 A (at -5 V), a high Iph/Idark of 1.2 × 104, a response time of 2 ms and photoresponsivity of 3.794 A/W have been obtained. It is also found that the photodetector shows good stability in air ambient for 2 months with little reduction in performance. Moreover, such hybrid photodetectors exhibit enhanced photocurrent and Iph/Idark in high-temperature environment. This work paves a new way for high-performance photodetectors and points out the possible application of the inorganic cesium lead halide perovskites in harsh environment.

Original languageEnglish
Pages (from-to)7231-7238
Number of pages8
JournalACS applied materials & interfaces
Volume10
Issue number8
DOIs
Publication statusPublished - 28 Feb 2018
Externally publishedYes

Keywords

  • InGaZnO film
  • heterojunction
  • high temperature
  • inorganic perovskite nanowires
  • photodetector

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