J. Mater. Sci. Technol. ›› 2022, Vol. 126: 161-168.DOI: 10.1016/j.jmst.2022.03.019

• Research Article • Previous Articles     Next Articles

Research Article Facile synthesis of bismuth nanoparticles for efficient self-powered broadband photodetector application

Song Yanga, Shujie Jiaoa,*(), Yiyin Niea, Tanjun Jianga, Hongliang Lua, Shuo Liua, Yue Zhaoa, Shiyong Gaoa, Dongbo Wanga, Jinzhong Wanga, Yongfeng Lib   

  1. aSchool of Materials Science and Engineering Harbin Institute of Technology, Harbin 150001,China
    bKey Laboratory for Physics and Technology for Advanced Batteries, Ministy of Education,CLollege of Phy sic,Jitin Uhniversity, Ohangchun 13012,China
  • Received:2021-12-07 Revised:2022-03-16 Accepted:2022-03-21 Published:2022-11-01 Online:2023-04-10
  • Contact: Shujie Jiao

Abstract:

Bismuth, an emerging topological insulator, has attracted great interest due to its fascinating properties. Herein, a facile, environmentally friendly, and low-cost solvothermal route was proposed to synthesize high-quality single-crystal bismuth nanoparticles. The performance of bismuth nanoparticles photoelectrochemical-type photodetector has been systematically evaluated. The responsivity spectrum shows that the bismuth nanoparticles photodetector has a broad response range from ultraviolet (UV) to near-infrared (NIR), with the highest responsivity of 4.979 mA/W at a wavelength of 405 nm without bias. Additionally, the device exhibits a fast response speed (tr < 12 ms, td < 46 ms) and a high specific detectivity (3.71 × 1010 Jones). These results indicate that bismuth nanoparticles have great potential in the application of self-powered broadband photodetectors with high responsivity. Moreover, the working mechanism of bismuth nanoparticles photodetector was proposed.

Key words: Bismuth nanoparticles, Photoelectrochemical, Self-powered, Broadband photodetector