ZnO nanowire array ultraviolet photodetectors with self-powered properties

被引：87

作者：

Bai, Zhiming ^{[1
]}

Yan, Xiaoqin ^{[1
]}

Chen, Xiang ^{[1
]}

Liu, Hanshuo ^{[1
]}

Shen, Yanwei ^{[1
]}

Zhang, Yue ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Key Lab New Energy Mat & Technol, Beijing 100083, Peoples R China

来源：

CURRENT APPLIED PHYSICS | 2013年 / 13卷 / 01期

关键词：

ZnO; Nanowire arrays; UV photodetector; Hydrothermal synthesis; Self-powered; NANOSTRUCTURES;

D O I：

10.1016/j.cap.2012.07.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A ZnO nanowire (NW) array ultraviolet photodetector (PD) with Pt Schottky contacts has been fabricated on a glass substrate. Under UV light illumination, this PD showed a high photo-to-dark current ratio of 892 at 30 V bias. Interestingly, it was also found that this PD had a high sensitivity of 475 without external bias. This phenomenon could be explained by the asymmetric Schottky barrier height (SBH) at the two ends causing different separation efficiency of photogenerated electron-hole pairs, which resulted in the formation of photocurrent. It is anticipated to have potential applications in self-powered UV detection field. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：165 / 169

页数：5

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