Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Phase-transition-induced superior ultraviolet photodetection of a ZnO/VO2 bilayer

Author affiliations

Abstract

A ZnO/VO2 bilayer film has been successfully grown on a sapphire substrate using pulsed laser deposition (PLD) and magnetron sputtering. The photodetection performance of ZnO is significantly improved across the phase transition temperature of VO2 both in the presence of a bias and zero bias. At a bias of 1 V, the ultraviolet (UV) photoresponsivity is amplified by approximately 32 times from 0.32 A W−1 to 10.07 A W−1 due to the phase transition of VO2. Simultaneously, after the phase transition of VO2, the rise and decay times decrease from 2.49 s and 2.06 s to 0.020 s and 0.032 s, respectively. As for zero-biased performance, the photoresponsivity is also enhanced from 0.53 mA W−1 to 5.56 mA W−1. These results suggest a brand-new mechanism, which can promote the UV photodetection of ZnO via controlling the temperature and provides more degrees of freedom to multifunctional devices.

Graphical abstract: Phase-transition-induced superior ultraviolet photodetection of a ZnO/VO2 bilayer

Back to tab navigation

Supplementary files

Article information


Submitted
21 Apr 2020
Accepted
27 May 2020
First published
28 May 2020

J. Mater. Chem. C, 2020, Advance Article
Article type
Paper

Phase-transition-induced superior ultraviolet photodetection of a ZnO/VO2 bilayer

Y. Xin, L. Hu, S. Ruan, Z. Ye and Y. Zeng, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/D0TC01944E

Social activity

Search articles by author

Spotlight

Advertisements