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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

78 Citations (Scopus)

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.

Original language	English
Pages (from-to)	818-826
Number of pages	9
Journal	Physical Chemistry Chemical Physics
Volume	18
Issue number	2
DOIs	https://doi.org/10.1039/c5cp06139c
Publication status	Published - 30 Nov 2015
Externally published	Yes

Access to Document

10.1039/c5cp06139c

Cite this

@article{70758c13efe640fe9118a144343e59fa,

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",

note = "Publisher Copyright: {\textcopyright} the Owner Societies 2016.",

year = "2015",

month = nov,

day = "30",

doi = "10.1039/c5cp06139c",

language = "English",

volume = "18",

pages = "818--826",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "2",

}

TY - JOUR

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.

UR - http://www.scopus.com/inward/record.url?scp=84952672819&partnerID=8YFLogxK

U2 - 10.1039/c5cp06139c

DO - 10.1039/c5cp06139c

M3 - Article

AN - SCOPUS:84952672819

SN - 1463-9076

VL - 18

SP - 818

EP - 826

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 2

ER -

Negative photoconductivity of InAs nanowires

Abstract

Access to Document

Other files and links

Fingerprint

Cite this