Issue 25, 2017

A high-performance photodetector based on an inorganic perovskite–ZnO heterostructure

Abstract

All-inorganic perovskites, such as CsPbX3 (X = Cl, Br, I), have recently emerged as highly promising optoelectronic materials due to their excellent physical properties, especially their higher thermal stability. However, the performance of a CsPbX3-based photodetector is worse than its counterparts based on organic–inorganic hybrid perovskites. In this work, we demonstrate flexible high performance photodetectors based on the CsPbBr3/ZnO heterostructure using solution-processesing. Owing to the interfacial charge transfer from perovskite to ZnO, the photocurrent of devices was enhanced by more than one order of magnitude after the introduction of a ZnO layer. The CsPbBr3/ZnO heterostructure photodetectors exhibited high sensitivity with an on/off ratio of >104 under 450 nm light illumination and a high photoresponsivity of 4.25 A W−1. Furthermore, CsPbBr3/ZnO photodetectors with excellent stability and outstanding flexibility were also demonstrated. This work demonstrates that CsPbBr3/ZnO heterostructures are promising for the construction of high-performance photodetectors and other optoelectronic devices.

Graphical abstract: A high-performance photodetector based on an inorganic perovskite–ZnO heterostructure

Supplementary files

Article information

Article type
Communication
Submitted
08 May 2017
Accepted
05 Jun 2017
First published
05 Jun 2017

J. Mater. Chem. C, 2017,5, 6115-6122

A high-performance photodetector based on an inorganic perovskite–ZnO heterostructure

H. Liu, X. Zhang, L. Zhang, Z. Yin, D. Wang, J. Meng, Q. Jiang, Y. Wang and J. You, J. Mater. Chem. C, 2017, 5, 6115 DOI: 10.1039/C7TC01998J

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