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

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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

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Publication details

The article was received on 08 May 2017, accepted on 05 Jun 2017 and first published on 05 Jun 2017


Article type: Communication
DOI: 10.1039/C7TC01998J
Citation: J. Mater. Chem. C, 2017, Advance Article
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    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, Advance Article , DOI: 10.1039/C7TC01998J

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