Ultraviolet Photoconductance of a Single Hexagonal WO3 Nanowire

被引：131

作者：

Huang, Kai ^{[1
]}

Zhang, Qing ^{[1
]}

Yang, Feng ^{[2
]}

He, Deyan ^{[2
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr Microelect, Singapore 639798, Singapore

[2] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China

来源：

NANO RESEARCH | 2010年 / 3卷 / 04期

关键词：

Hexagonal WO3 nanowire; ultraviolet; photodetector; PHOTODETECTORS;

D O I：

10.1007/s12274-010-1031-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The ultraviolet (UV) photoconductance properties of a single hexagonal WO3 nanowire have been studied systematically. The conductance of WO3 nanowires is very sensitive to ultraviolet B light and a field-effect transistor (FET) nanodevice incorporating a single WO3 nanowire exhibits excellent sensitivity, reversibility, and wavelength selectivity. A high photoconductivity gain suggests that WO3 nanowires can be used as the sensing element for UV photodetectors. Measurements under UV light in vacuum show that the adsorption and desorption of oxygen molecules on the surface of the WO3 nanowire can significantly influence its photoelectrical properties. The WO3 nanowires have potential applications in biological sensors, optoelectronic devices, optical memory, and other areas.

引用

页码：281 / 287

页数：7

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