All-Perovskite Photodetector with Fast Response

Yue Yang; Haitao Dai; Feng Yang; Yating Zhang; Dan Luo; Xiaoli Zhang; Kai Wang; Xiao Wei Sun; Jianquan Yao

doi:10.1186/s11671-019-3082-z

All-Perovskite Photodetector with Fast Response

Nanoscale Res Lett. 2019 Aug 22;14(1):291. doi: 10.1186/s11671-019-3082-z.

Authors

Yue Yang^{1

2}, Haitao Dai³, Feng Yang⁴, Yating Zhang², Dan Luo⁵, Xiaoli Zhang⁵, Kai Wang⁵, Xiao Wei Sun⁵, Jianquan Yao²

Affiliations

¹ Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, 300072, China.
² Key Laboratory of Opto-Electronics Information Technology, College of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin, 300072, China.
³ Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, School of Science, Tianjin University, Tianjin, 300072, China. htdai@tju.edu.cn.
⁴ School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China. yangf@smu.edu.cn.
⁵ Department of Electrical & Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.

Abstract

Perovskites have attracted substantial attention on account of their excellent physical properties and simple preparation process. Here we demonstrated an improved photodetector based on solution-processing organic-inorganic hybrid perovskite CH₃NH₃PbI_3-xCl_x layer decorated with CsPbBr₃ perovskite quantum dots. The CH₃NH₃PbI_3-xCl_x-CsPbBr₃ photodetector was operated in a visible light region, which appeared high responsivity (R = 0.39 A/W), detectivity (D* = 5.43 × 10⁹ Jones), carrier mobility (μ_p = 172 cm² V^-1 s^-1 and μ_n = 216 cm² V^-1 s^-1), and fast response (rise time 121 μs and fall time 107 μs). The CH₃NH₃PbI_3-xCl_x-CsPbBr₃ heterostructure is anticipated to find comprehensive applications in future high-performance photoelectronic devices.

Keywords: CsPbBr3 quantum dots; Fast response; Perovskite; Photodetector.

Abstract

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