Photoconductive characteristics of single-crystal CdS nanoribbons

被引：559

作者：

Jie, J. S.

Zhang, W. J. ^{[1
]}

Jiang, Y.

Meng, X. M.

Li, Y. Q.

Lee, S. T.

机构：

[1] City Univ Hong Kong, COSDAF, Hong Kong, Hong Kong, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

[3] Chinese Acad Sci, Nanoorgan Photoelect Lab, Tech Inst Phys & Chem, Beijing 100101, Peoples R China

来源：

NANO LETTERS | 2006年 / 6卷 / 09期

关键词：

D O I：

10.1021/nl060867g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photoconductive characteristics of CdS single nanoribbons were investigated. The device characteristics, including spectral response, light intensity response, and time response, were studied systematically. It is found that CdS nanoribbon has the response speed substantively faster than those ever reported for conventional film and bulk CdS materials and the size of nanoribbons has a significant influence on the response speed with smaller CdS nanoribbons showing higher response speed. The high photosensitivity and high photoresponse speed are attributable to the large surface-to-volume ratio and high single-crystal quality of CdS nanoribbons and the reduction of recombination barrier in nanostructures. Measurements in a different atmosphere demonstrate that the absorption of ambient gas ( mainly oxygen) can significantly change the photosensitivity of CdS nanoribbons through trapping electrons from the nanoribbons.

引用

页码：1887 / 1892

页数：6

共 27 条

[11] Photoconduction studies on GaN nanowire transistors under UV and polarized UV illumination
Han, S
Jin, W
Zhang, DH
Tang, T
Li, C
Liu, XL
Liu, ZQ
Lei, B
Zhou, CW
[J]. CHEMICAL PHYSICS LETTERS, 2004, 389 (1-3) : 176 - 180
[12] Nanowires for integrated multicolor nanophotonics
Huang, Y
Duan, XF
Lieber, CM
[J]. SMALL, 2005, 1 (01) : 142 - 147
[13] Joshi N., 1990, PHOTOCONDUCTIVITY AR
[14] Kind H, 2002, ADV MATER, V14, P158, DOI 10.1002/1521-4095(20020116)14:2<158::AID-ADMA158>3.0.CO
[15] 2-W
[16] Law M, 2002, ANGEW CHEM INT EDIT, V41, P2405, DOI 10.1002/1521-3773(20020703)41:13<2405::AID-ANIE2405>3.0.CO
[17] 2-3
[18] Optoelectronic characteristics of single CdS nanobelts
Li, QH
Gao, T
Wang, TH
[J]. APPLIED PHYSICS LETTERS, 2005, 86 (19) : 1 - 3
[19] Liu J., 2005, Photonic Devices
[20] Size-dependent photoconductance in SnO2 nanowires
Mathur, S
Barth, S
Shen, H
Pyun, JC
Werner, U
[J]. SMALL, 2005, 1 (07) : 713 - 717

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