Temperature dependence of photoconductivity and persistent photoconductivity of single ZnO nanowires

被引：45

作者：

Liao, Zhi-Min ^{[1
]}

Lu, Yi ^{[2
]}

Xu, Jun ^{[3
]}

Zhang, Jing-Min ^{[3
]}

Yu, Da-Peng ^{[1
,3
]}

机构：

[1] Peking Univ, Dept Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Yuanpei Coll, Beijing 100871, Peoples R China

[3] Peking Univ, Sch Phys, Elect Microscopy Lab, Beijing 100871, Peoples R China

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2009年 / 95卷 / 02期

关键词：

PHOTODETECTORS;

D O I：

10.1007/s00339-008-5058-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoelectrical properties of single ZnO nanowires have been investigated using photocurrent-voltage characteristics measurements varying with excitation photon energy and temperature. It is found that persistent photoconductivity (PPC) exists, and the PPC decreases with decreasing temperature. The temperature dependence of the PPC effect indicates that thermally activated return of electrons from shallow traps is responsible for the PPC phenomenon. The photosensitivity is found to be linear with the applied voltage, and it increases with decreasing temperature. A temperature dependence of photoconductivity gain was introduced to explain the experimental results.

引用

页码：363 / 366

页数：4

共 20 条

[1] Origin of the slow photoresponse in an individual sol-gel synthesized ZnO nanowire [J].

Ahn, Seung-Eon ;

Ji, Hyun Jin ;

Kim, Kanghyun ;

Kim, Gyu Tae ;

Bae, Chang Hyun ;

Park, Seung Min ;

Kim, Yong-Kwan ;

Ha, Jeong Sook .

APPLIED PHYSICS LETTERS, 2007, 90 (15)

[2] Broadband ZnO single-nanowire light-emitting diode [J].

Bao, Jiming ;

Zimmler, Mariano A. ;

Capasso, Federico ;

Wang, Xiaowei ;

Ren, Z. F. .

NANO LETTERS, 2006, 6 (08) :1719-1722

[3] A ZnO nanowire vacuum pressure sensor [J].

Chang, Shoou-Jinn ;

Hsueh, Ting-Jen ;

Hsu, Cheng-Liang ;

Lin, Yan-Ru ;

Chen, I-Cherng ;

Huang, Bohr-Ran .

NANOTECHNOLOGY, 2008, 19 (09)

[4] Gate-refreshable nanowire chemical sensors [J].

Fan, ZY ;

Lu, JG .

APPLIED PHYSICS LETTERS, 2005, 86 (12) :1-3

[5] Room-temperature ultraviolet nanowire nanolasers [J].

Huang, MH ;

Mao, S ;

Feick, H ;

Yan, HQ ;

Wu, YY ;

Kind, H ;

Weber, E ;

Russo, R ;

Yang, PD .

SCIENCE, 2001, 292 (5523) :1897-1899

[6] Electroluminescence from ZnO nanowires in n-ZnO film/ZnO nanowire array/p-GaN film heterojunction light-emitting diodes [J].

Jeong, Min-Chang ;

Oh, Byeong-Yun ;

Ham, Moon-Ho ;

Myoung, Jae-Min .

APPLIED PHYSICS LETTERS, 2006, 88 (20)

[7] Photocurrent in ZnO nanowires grown from Au electrodes [J].

Keem, K ;

Kim, H ;

Kim, GT ;

Lee, JS ;

Min, B ;

Cho, K ;

Sung, MY ;

Kim, S .

APPLIED PHYSICS LETTERS, 2004, 84 (22) :4376-4378

[8]

Kind H, 2002, ADV MATER, V14, P158, DOI 10.1002/1521-4095(20020116)14:2<158::AID-ADMA158>3.0.CO

[9]

2-W

[10] Improving the NH3 gas sensitivity of ZnO nanowire sensors by reducing the carrier concentration [J].

Law, J. B. K. ;

Thong, J. T. L. .

NANOTECHNOLOGY, 2008, 19 (20)

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