Low-temperature architecture of a cubic-phase CsPbBr3 single crystal for ultrasensitive weak-light photodetectors

Xiangfeng Wei; Han Liu; Zhixiang Zhang; Wenchao Xu; Wenjun Huang; Lin-Bao Luo; Jiehua Liu

doi:10.1039/D1CC03460J

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Low-temperature architecture of a cubic-phase CsPbBr₃ single crystal for ultrasensitive weak-light photodetectors†

Xiangfeng Wei,‡^a Han Liu,‡^a Zhixiang Zhang,^b Wenchao Xu,^a Wenjun Huang,^a Lin-Bao Luo

*^b and Jiehua Liu

*^ac

Author affiliations

* Corresponding authors

^a Future Energy Laboratory, School of Materials Science and Engineering, Hefei University of Technology, Hefei, China
E-mail: liujh@hfut.edu.cn

^b School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China
E-mail: luolb@hfut.edu.cn

^c Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Engineering Research Center of High Performance Copper Alloy Materials and Processing, Ministry of Education, Hefei, China

Abstract

We present the first report of a water-regulated method for obtaining a cubic-phase CsPbBr₃ single crystal that could be frozen at low temperature with a CsBr/PbBr₂ ratio of 1 : 1. The cubic CsPbBr₃ single-crystal photodetector exhibits a superior responsivity of 278 A W⁻¹, an EQE of 6.63 × 10⁴%, and an ultrahigh detectivity of 4.36 × 10¹³ Jones under low-power 520 nm irradiation at 3 V.

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Article information

DOI: https://doi.org/10.1039/D1CC03460J
Article type: Communication
Submitted: 29 Jun 2021
Accepted: 07 Jul 2021
First published: 07 Jul 2021

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Chem. Commun., 2021,57, 7798-7801

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Low-temperature architecture of a cubic-phase CsPbBr₃ single crystal for ultrasensitive weak-light photodetectors

X. Wei, H. Liu, Z. Zhang, W. Xu, W. Huang, L. Luo and J. Liu, Chem. Commun., 2021, 57, 7798 DOI: 10.1039/D1CC03460J

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Chemical Communications