J. Mater. Sci. Technol. ›› 2023, Vol. 164: 95-101.DOI: 10.1016/j.jmst.2023.05.011

• Research Article • Previous Articles     Next Articles

Two-dimensional perovskite Pb2Nb3O10 photodetectors

Yong Zhanga,b,1, Jian Yaob,1, Zhen Zhangb, Rong Zhangb, Li Lib, Yu Tengb, Zongjie Shenb, Lixing Kangb,*, Limin Wuc,d,*, Xiaosheng Fangc,*   

  1. aSchool of Electronic and Information Engineering, Changshu Institute of Technology, Changshu 215500, China
    bDivision of Advanced Materials, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
    cDepartment of Materials Science, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, China
    dCollege of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
  • Received:2023-03-28 Revised:2023-05-23 Accepted:2023-05-29 Published:2023-11-20 Online:2023-11-15
  • Contact: *E-mail addresses: lxkang2013@sinano.ac.cn (L. Kang), lmw@fudna.edu.cn (L. Wu), xshfang@fudan.edu.cn (X. Fang).
  • About author:1These authors contributed equally to this work.

Abstract: For the first time, we report high-performance two-dimensional (2D) perovskite Pb2Nb3O10 photodetectors (PNO PDs). The few-layer PNO nanosheets are obtained successfully through a simple calcination and liquid exfoliation method. The individual PNO nanosheet devices with various structures (Au-PNO-Au, Au-PNO-Ti, Ti-PNO-Ti) are fabricated and investigated. The Au-PNO-Ti device exhibits a high rectification factor (∼102) owing to a large Schottky barrier difference between the PNO nanosheet and two asymmetric electrodes. Notably, the Au-PNO-Ti device shows excellent self-powered performance, including high responsivity (2.8 A/W), high detectivity (1.1 × 1012 Jones), and fast speed (0.2/1.2 ms) at 350 nm light illumination. This work not only suggests the performance of the PNO nanosheet PDs but also sheds light on the development of high-stability and high-performance devices based on 2D perovskite niobate in the future.

Key words: Pb2Nb3O10, Photodetectors, Self-powered, Two-dimensional, Perovskite