Optics and Precision Engineering, Volume. 32, Issue 5, 653(2024)
Preparation and performance of self-powered Ag/Bi2O3 nanoblocks ultraviolet photodetector
To effectively detect ultraviolet (UV) light without an external power source, a self-powered UV photodetector (UVPD) was developed using Ag/Bi2O3 nanoblocks. Initially, Bi2O3 nanoblocks were prepared through a calcination process, followed by the successful synthesis of Ag/Bi2O3 nanoblocks by depositing Ag nanoparticles on their surface via a solution reaction method at room temperature. The crystal structure and microstructures of the samples were analyzed, revealing that the Ag/Bi2O3 nanoblocks had an average diameter of approximately 1 μm, with Ag nanoparticles randomly distributed on the surface of the Bi2O3 nanoblocks. The Ag/Bi2O3 nanoblocks were then coated on FTO as the working electrode, leading to the construction of the self-powered UVPD. Upon exposure to UV light (365 nm), the Ag/Bi2O3 nanoblocks UVPD quickly detected UV light at zero bias voltage, showcasing its self-powered capability. Compared to the Bi2O3 nanoblocks UVPD, the Ag/Bi2O3 nanoblocks UVPD displayed significantly improved photocurrents, with rise and decay times reduced to 29.1 ms and 40.2 ms, respectively, and demonstrated excellent cycling stability.
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Xiangming FANG, Qicheng ZHOU, Yu SUN, Zhiming QIAO, Qiudan GENG, Shiyong GAO. Preparation and performance of self-powered Ag/Bi2O3 nanoblocks ultraviolet photodetector[J]. Optics and Precision Engineering, 2024, 32(5): 653
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Received: Oct. 11, 2023
Accepted: --
Published Online: Apr. 2, 2024
The Author Email: GAO Shiyong (gaoshiyong@hit.edu.cn)