Preparation and enhanced infrared response properties of ordered W-doped VO2 nanowire array
Abstract
In this article, pure and tungsten-doped (W-doped) highly ordered two-dimensional (2D) vanadium dioxide (VO2) nanowire arrays were successfully prepared by a hydrothermal treatment, followed by a self-assembly progress and the in-situ high temperature treatment. The infrared photodetector devices based on monoclinic VO2 (VO2(M)) and W-doped VO2(M) nanowires were comparatively studied . It was found that the device based on W-doped VO2(M) nanowires exhibits a rapid infrared response and an enhanced photoelectric responsivity of 21.4 mA/W under the incident infrared light intensity of 280 mW/cm2, which is nearly two orders of magnitude superior to pure VO2(M) nanowire array. Our experimental results provided a direct and convenient path for design of future high-performance photodetector devices.
- Publication:
-
Applied Surface Science
- Pub Date:
- April 2018
- DOI:
- 10.1016/j.apsusc.2017.12.072
- Bibcode:
- 2018ApSS..436.1061X
- Keywords:
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- W-doped VO<SUB>2</SUB>;
- 2D ordered nanowire arrays;
- Infrared photodetector;
- Comparative study;
- Photoelectric responsivity