Negative photoconductivity of InAs nanowires

Yuxiang Han; Xiao Zheng; Mengqi Fu; Dong Pan; Xing Li; Yao Guo; Jianhua Zhao; Qing Chen

doi:10.1039/c5cp06139c

Negative photoconductivity of InAs nanowires

Yuxiang Han, Xiao Zheng, Mengqi Fu, Dong Pan, Xing Li, Yao Guo, Jianhua Zhao, Qing Chen^*

^*此作品的通讯作者

科研成果: 期刊稿件 › 文章 › 同行评审

79 引用（Scopus）

摘要

Negative photoconductivity is observed in InAs nanowires (NWs) without a surface defective layer. The negative photoconductivity is strongly dependent on the wavelength and intensity of the light, and is also sensitive to the environmental atmosphere. Two kinds of mechanisms are discerned to work together. One is related to gas adsorption, which is photodesorption of water molecules and photo-assisted chemisorption of O₂ molecules. The other one can be attributed to the photogating effect introduced by the native oxide layer outside the NWs.

源语言	英语
页（从-至）	818-826
页数	9
期刊	Physical Chemistry Chemical Physics
卷	18
期	2
DOI	https://doi.org/10.1039/c5cp06139c
出版状态	已出版 - 30 11月 2015
已对外发布	是

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title = "Negative photoconductivity of InAs nanowires",

abstract = "Negative photoconductivity is observed in InAs nanowires (NWs) without a surface defective layer. The negative photoconductivity is strongly dependent on the wavelength and intensity of the light, and is also sensitive to the environmental atmosphere. Two kinds of mechanisms are discerned to work together. One is related to gas adsorption, which is photodesorption of water molecules and photo-assisted chemisorption of O2 molecules. The other one can be attributed to the photogating effect introduced by the native oxide layer outside the NWs.",

author = "Yuxiang Han and Xiao Zheng and Mengqi Fu and Dong Pan and Xing Li and Yao Guo and Jianhua Zhao and Qing Chen",

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T1 - Negative photoconductivity of InAs nanowires

AU - Han, Yuxiang

AU - Zheng, Xiao

AU - Fu, Mengqi

AU - Pan, Dong

AU - Li, Xing

AU - Guo, Yao

AU - Zhao, Jianhua

AU - Chen, Qing

PY - 2015/11/30

Y1 - 2015/11/30

N2 - Negative photoconductivity is observed in InAs nanowires (NWs) without a surface defective layer. The negative photoconductivity is strongly dependent on the wavelength and intensity of the light, and is also sensitive to the environmental atmosphere. Two kinds of mechanisms are discerned to work together. One is related to gas adsorption, which is photodesorption of water molecules and photo-assisted chemisorption of O2 molecules. The other one can be attributed to the photogating effect introduced by the native oxide layer outside the NWs.

AB - Negative photoconductivity is observed in InAs nanowires (NWs) without a surface defective layer. The negative photoconductivity is strongly dependent on the wavelength and intensity of the light, and is also sensitive to the environmental atmosphere. Two kinds of mechanisms are discerned to work together. One is related to gas adsorption, which is photodesorption of water molecules and photo-assisted chemisorption of O2 molecules. The other one can be attributed to the photogating effect introduced by the native oxide layer outside the NWs.

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VL - 18

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EP - 826

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 2

ER -

Negative photoconductivity of InAs nanowires

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