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

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...

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Bibliographic Details
Published in:Nanotechnology 2013-07, Vol.24 (29), p.295701-295701
Main Authors: Shao, Dali, Yu, Mingpeng, Lian, Jie, Sawyer, Shayla
Format: Article
Language:English
Subjects:
Applied sciences
Chemical synthesis methods
Cross-disciplinary physics: materials science
rheology
Electronics
Exact sciences and technology
Fullerenes and related materials
diamonds, graphite
Materials science
Methods of nanofabrication
Molecular electronics, nanoelectronics
Optoelectronic devices
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Specific materials
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Summary: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 H2WO4/GO composites by acidification. Finally, the H2WO4/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.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/24/29/295701