Journal of Inorganic Materials ›› 2023, Vol. 38 ›› Issue (9): 1069-1075.DOI: 10.15541/jim20230045

Special Issue: 【能源环境】钙钛矿(202310)

• RESEARCH ARTICLE • Previous Articles     Next Articles

Photodetector Based on Two-dimensional Perovskite (PEA)2PbI4

CAI Kai(), JIN Zhiwen()   

  1. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
  • Received:2023-01-29 Revised:2023-04-11 Published:2023-09-20 Online:2023-05-04
  • Contact: JIN Zhiwen, professor. E-mail: jinzw@lzu.edu.cn
  • About author:CAI Kai (1998-), male, Master candidate. E-mail: caik20@lzu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(22279049);National Natural Science Foundation of China(52261145692);National Natural Science Foundation of China(12247101);National Natural Science Foundation of China(62174093);Fundamental Research Funds for the Central Universities(lzujbky-2021-it31);Fundamental Research Funds for the Central Universities(lzujbky-2021-ct15);Fundamental Research Funds for the Central Universities(lzujbky-2021-sp69)

Abstract:

Two-dimensional (2D) perovskite displays great potential in optoelectronic applications due to its inherent quantum well structure, large exciton binding energy and good stability. However, facile preparation of high-quality 2D perovskite films with low cost remains a huge challenge. In this work, high-quality two-dimensional perovskite (PEA)2PbI4 films were prepared by solution method at low annealing temperature(80 ℃) without other special treatments, and further applied in the field of photodetectors. The results show that this photodetector possessed a low dark current (10-11 A), good responsiveness illuminated at a wavelength of 450 nm (107 mA·W-1), high detection rate (2.05×1012 Jones) and fast response time (250 μs/330 μs). After 1200 s continuous illumination, the device maintains 95% initial photocurrent. In addition, the photocurrent remains almost unchanged after storage for 30 d. This work provides promising strategy to develop stable and high-performance optoelectronic devices.

Key words: two-dimensional perovskite, (PEA)2PbI4, photodetector, low demand preparation

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