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Issue 2, 2016
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Negative photoconductivity of InAs nanowires

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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.

Graphical abstract: Negative photoconductivity of InAs nanowires

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The article was received on 12 Oct 2015, accepted on 17 Nov 2015 and first published on 17 Nov 2015


Article type: Paper
DOI: 10.1039/C5CP06139C
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Citation: Phys. Chem. Chem. Phys., 2016,18, 818-826
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    Negative photoconductivity of InAs nanowires

    Y. Han, X. Zheng, M. Fu, D. Pan, X. Li, Y. Guo, J. Zhao and Q. Chen, Phys. Chem. Chem. Phys., 2016, 18, 818
    DOI: 10.1039/C5CP06139C

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