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

共 38 条

[1] Photoresponse of sol-gel-synthesized ZnO nanorods
Ahn, SE
Lee, JS
Kim, H
Kim, S
Kang, BH
Kim, KH
Kim, GT
[J]. APPLIED PHYSICS LETTERS, 2004, 84 (24) : 5022 - 5024
[2] Effect of Surface Capping with Poly(vinyl alcohol) on the Photocarrier Relaxation of ZnO Nanowires
Bera, Ashok
Basak, Durga
[J]. ACS APPLIED MATERIALS & INTERFACES, 2009, 1 (09) : 2066 - 2070
[3] High-performance photoresponse from single-walled carbon nanotube-zinc oxide heterojunctions
Chang, Jingbo
Najeeb, Choolakadavil Khalid
Lee, Jae-Hyeok
Lee, Minsu
Kim, Jae-Ho
[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2011, 44 (09)
[4] Effects of post-deposition rapid thermal annealing on aluminum-doped ZnO thin films grown by atomic layer deposition
Cheng, Yung-Chen
[J]. APPLIED SURFACE SCIENCE, 2011, 258 (01) : 604 - 607
[5] ZnO/anthracene based inorganic/organic nanowire heterostructure: Photoresponse and photoluminescence studies
Dhara, Soumen
Giri, P. K.
[J]. JOURNAL OF APPLIED PHYSICS, 2012, 111 (04)
[6] On the origin of enhanced photoconduction and photoluminescence from Au and Ti nanoparticles decorated aligned ZnO nanowire heterostructures
Dhara, Soumen
Giri, P. K.
[J]. JOURNAL OF APPLIED PHYSICS, 2011, 110 (12)
[7] Enhanced UV photosensitivity from rapid thermal annealed vertically aligned ZnO nanowires
Dhara, Soumen
Giri, P. K.
[J]. NANOSCALE RESEARCH LETTERS, 2011, 6
[8] Size-dependent visible absorption and fast photoluminescence decay dynamics from freestanding strained silicon nanocrystals
Dhara, Soumen
Giri, P. K.
[J]. NANOSCALE RESEARCH LETTERS, 2011, 6
[9] Strain distribution in bent ZnO microwires
Dietrich, C. P.
Lange, M.
Kluepfel, F. J.
von Wenckstern, H.
Schmidt-Grund, R.
Grundmann, M.
[J]. APPLIED PHYSICS LETTERS, 2011, 98 (03)
[10] Electrical and photoconductive properties of vertical ZnO nanowires in high density arrays
Fan, Zhiyong
Dutta, Deepanshu
Chien, Chung-Jen
Chen, Hsiang-Yu
Brown, Evan C.
Chang, Pai-Chun
Lu, Jia G.
[J]. APPLIED PHYSICS LETTERS, 2006, 89 (21)

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