Ag nanoparticles@ZnO nanowire composite arrays: an absorption enhanced UV photodetector

被引：89

作者：

Liu, Yang ^{[1
,3
]}

Zhang, Xianghui ^{[2
]}

Su, Jun ^{[1
]}

Li, Haixia ^{[1
]}

Zhang, Qi ^{[4
]}

Gao, Yihua ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Ctr Nanoscale Characterizat & Devices,Sch Phys, Wuhan 430074, Peoples R China

[2] Hubei Univ, Fac Phys & Elect Sci, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Wuhan 430062, Peoples R China

[3] Wuhan Inst Technol, Sch Sci, Wuhan 430074, Peoples R China

[4] Jilin Normal Univ, Coll Phys, Siping 136000, Peoples R China

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 24期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING-DIODES; ULTRAVIOLET PHOTODETECTORS; NANOSTRUCTURES; PERFORMANCE; SENSORS; TIME;

D O I：

10.1364/OE.22.030148

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel heterojunction ultraviolet (UV) photodetector of assembling Ag nanoparticles (NPs) onto ZnO nanowire (NW) arrays was fabricated via combination of chemical vapor deposition and thermal evaporation route. The fabricated composite Ag@ZnO NW arrays show blue-shift of UV peaks, suppression of the visible peaks, and obvious enhancements in absorption from ultraviolet to infrared region and photoluminescence (PL) emission at room-temperature. These phenomena are attributed to the Localized Surface Plasmon Resonance (LSPR) effect. Benefiting from absorption enhancement and surface heterojunctions, Ag@ZnO heterostructures show a photocurrent increment by 117%, a short response time of 80 ms and a recovery time of 3.27 s under 365 nm UV illumination of 0.24 mW/cm(2). This research presented a simple route to obtain high performance UV photodetectors and would be of some benefit in optical-electron devices manufacture. (C) 2014 Optical Society of America

引用

页码：30148 / 30155

页数：8

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