Improved fast photoresponse from Al doped ZnO nanowires network decorated with Au nanoparticles

被引：30

作者：

Dhara, Soumen ^{[1
]}

Giri, P. K. ^{[1
,2
]}

机构：

[1] Indian Inst Technol, Dept Phys, Gauhati 781039, India

[2] Indian Inst Technol, Ctr Nanotechnol, Gauhati 781039, India

来源：

CHEMICAL PHYSICS LETTERS | 2012年 / 541卷

关键词：

PHOTODETECTORS; NANORODS;

D O I：

10.1016/j.cplett.2012.05.026

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：

Herein we report an effective novel approach to improve the photoresponse and reset times as well as the photosensitivity of the ZnO NWs heterostructure. We show that as compared to the pristine ZnO NWs, much faster photoresponse (100 ms) and enhanced (sixfolds) photosensitivity could be achieved by Al doping followed by Au NPs decoration of the ZnO NWs networks. The improvement in the photosensitivity and photoresponse time is explained on the basis of plasmon assisted electrons transfer from Au NPs to ZnO NWs and interfacial interaction with the photogenerated electrons. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：39 / 43

页数：5

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