An ultraviolet photodetector fabricated from WO₃ nanodiscs/reduced graphene oxide composite material.

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2013
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Abstract
A high sensitivity, fast ultraviolet (UV) photodetector was fabricated from WO₃ nanodiscs (NDs)/reduced graphene oxide (RGO) composite material. The WO₃ NDs/reduced GO composite material was synthesized using a facile three-step synthesis procedure. First, the Na₂WO₄/GO precursor was synthesized by homogeneous precipitation. Second, the Na₂WO₄/GO precursor was transformed into Na₂WO₄/GO composites by acidification. Finally, the Na₂WO₄/GO composites were reduced to WO₃ NDs/RGO via a hydrothermal reduction process. The UV photodetector showed a fast transient response and high responsivity, which are attributed to the improved carrier transport and collection efficiency through graphene. The excellent material properties of the WO₃ NDs/RGO composite demonstrated in this work may open up new possibilities for using WO₃ NDs/RGO for future optoelectronic applications.
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shao2013annanotechnology Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Shao, Dali;Yu, Mingpeng;Lian, Jie;Sawyer, Shayla;
Journal Nanotechnology
Year 2013
DOI
10.1088/0957-4484/24/29/295701
URL
Keywords
Reduced graphene oxide heterojunctions photodetector arrays silicon nanowires

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