UV-vis-IR Broad Spectral Photodetectors Based on VO-ZnO Nanocrystal Films

Overview

Journal ACS Omega

Publisher American Chemical Society

Specialty Chemistry

Date 2022 Oct 31

PMID 36312338

Authors

Danting Xu

Xia Zhu

Jiakun An

Gaoyu Chen

Jianchun Bao

Xiangxing Xu

Affiliations

Soon will be listed here.

Abstract

As a narrow band semiconductor at room temperature and a metallic material above ∼68 °C, functional VO films are widely investigated for smart windows, whereas their potential for ultraviolet-visible-infrared (UV-vis-IR) broad spectral photodetectors has not been efficiently studied. In this report, photodetectors based on VO-ZnO nanocrystal composite films were prepared by nanocrystal-mist (NC-mist) deposition. An enhanced photodetection switching ratio was achieved covering the ultraviolet to infrared wavelength. Due to the synergetic effect of nanosize, surface, phase transition, percolation threshold, and the band structure of the heterojunction, the transfer and transport of photogenerated carriers modulate the device performance. This study probes new chances of applying VO-semiconductor-based nanocomposites for broad spectral photodetectors.

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