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Issue 33, 2017
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High-performance perovskite photodetectors based on solution-processed all-inorganic CsPbBr3 thin films

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Abstract

Halide perovskites have attracted increasing attention in recent years as promising materials for optoelectronic devices. Herein, we report the use of a one-step spin-coating method for the preparation of all-inorganic CsPbBr3 perovskite thin film photodetectors. For the preparation of devices, the all-inorganic CsPbBr3 perovskite thin films were applied onto the interdigitated (IDT) patterned Au electrodes, and symmetrically structured photoconductive detectors were obtained. Photoresponse analysis reveals that a high photoresponsivity of 55 A W−1, an on/off photocurrent ratio of 1.06 × 105, a specific detectivity of up to 0.9 × 1013 Jones, an external quantum efficiency (EQE) of 16 700%, and a fast response speed of 430/318 μs were achieved in the fabricated CsPbBr3 photodetectors. Such performances are much better than those of most perovskite photodetectors from CsPbBr3 nanocrystals, and comparable with the highest results reported on organic–inorganic perovskite photodetectors. This work opens up an exciting opportunity for using all-inorganic perovskites for high-performance and low-cost photodetection applications.

Graphical abstract: High-performance perovskite photodetectors based on solution-processed all-inorganic CsPbBr3 thin films

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Publication details

The article was received on 15 May 2017, accepted on 29 Jun 2017 and first published on 30 Jun 2017


Article type: Communication
DOI: 10.1039/C7TC02137B
Citation: J. Mater. Chem. C, 2017,5, 8355-8360
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    High-performance perovskite photodetectors based on solution-processed all-inorganic CsPbBr3 thin films

    Y. Li, Z. Shi, S. Li, L. Lei, H. Ji, D. Wu, T. Xu, Y. Tian and X. Li, J. Mater. Chem. C, 2017, 5, 8355
    DOI: 10.1039/C7TC02137B

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