A self-powered ultraviolet photodetector based on TiO2/Ag/ZnS nanotubes with high stability and fast response

Autor:	Jinzhong Wang, Y.D. Huang, Yong Zhang, Shujie Jiao, Xiang Li, Shiyong Gao, Dongjun Wang, Dandan Sang, Guangning Wang, Zhikun Xu
Rok vydání:	2020
Předmět:	Photocurrent Signal response Materials science Analytical chemistry Photodetector Ag nanoparticles General Chemistry medicine.disease_cause Decay time Rise time Materials Chemistry medicine Layer (electronics) Ultraviolet
Zdroj:	Journal of Materials Chemistry C. 8:1353-1358
ISSN:	2050-7534 2050-7526
Popis:	Ag nanoparticles (NPs) have been successfully deposited onto TiO2 nanotubes (NTs) via a photochemical method and ZnS layer was further fabricated on the surface of the TiO2/Ag NTs at room temperature. The morphology, composition and structure of the as-prepared samples were analyzed. A self-powered UV photodetector (UVPD) based on the TiO2/Ag/ZnS NTs has been constructed. When exposed to UV light, the TiO2/Ag/ZnS NTs UVPD manifests a higher photocurrent density than that of the TiO2 and TiO2/Ag NTs UVPDs at a bias of zero V. The TiO2/Ag/ZnS NTs UVPD also reveals a splendid linear optical signal response. Meanwhile, it is noteworthy that the TiO2/Ag/ZnS NTs UVPD has excellent stability and repeatability, and the rise time and decay time are 0.16 s and 0.18 s, respectively. Moreover, a possible UV detection mechanism of the TiO2/Ag/ZnS NTs UVPD is proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4ee2376bb261dc7aaf876187d72f704c https://doi.org/10.1039/c9tc05326c Zobrazit plný text záznamu