Sublinear photoconductivity in n-type a-Si:H

analysis and computer modelling

C. Main, F. Dick, S. Reynolds, W. Gao, R. A. G. Gibson

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    In this paper an approach is suggested to examine photoconductivity in n-type a-Si:H, in which band tails are required to play an important role as reservoirs of trapped charge but do not provide a significant recombination path. The model arises from observations of steady state photoconductivity in n-type a-Si:H which reveal sublinear behaviour of photocurrent dI extending several orders of magnitude below the ‘dark’ current IO. This is unexpected behaviour, since most models predict linearity for small-signal conditions. Computer simulations using the suggested model reproduce this behaviour and also fit the observed temperature dependence of the index, ?.

    Original languageEnglish
    Pages (from-to)263-266
    Number of pages4
    JournalJournal of Non-Crystalline Solids
    Volume200
    DOIs
    Publication statusPublished - 1996

    Fingerprint

    Photoconductivity
    photoconductivity
    Dark currents
    dark current
    Photocurrents
    linearity
    photocurrents
    computerized simulation
    temperature dependence
    Computer simulation
    Temperature

    Cite this

    Main, C. ; Dick, F. ; Reynolds, S. ; Gao, W. ; Gibson, R. A. G. / Sublinear photoconductivity in n-type a-Si:H : analysis and computer modelling. In: Journal of Non-Crystalline Solids. 1996 ; Vol. 200. pp. 263-266.
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    abstract = "In this paper an approach is suggested to examine photoconductivity in n-type a-Si:H, in which band tails are required to play an important role as reservoirs of trapped charge but do not provide a significant recombination path. The model arises from observations of steady state photoconductivity in n-type a-Si:H which reveal sublinear behaviour of photocurrent dI extending several orders of magnitude below the ‘dark’ current IO. This is unexpected behaviour, since most models predict linearity for small-signal conditions. Computer simulations using the suggested model reproduce this behaviour and also fit the observed temperature dependence of the index, ?.",
    author = "C. Main and F. Dick and S. Reynolds and W. Gao and Gibson, {R. A. G.}",
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    Sublinear photoconductivity in n-type a-Si:H : analysis and computer modelling. / Main, C.; Dick, F.; Reynolds, S.; Gao, W.; Gibson, R. A. G.

    In: Journal of Non-Crystalline Solids, Vol. 200, 1996, p. 263-266.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Sublinear photoconductivity in n-type a-Si:H

    T2 - analysis and computer modelling

    AU - Main, C.

    AU - Dick, F.

    AU - Reynolds, S.

    AU - Gao, W.

    AU - Gibson, R. A. G.

    PY - 1996

    Y1 - 1996

    N2 - In this paper an approach is suggested to examine photoconductivity in n-type a-Si:H, in which band tails are required to play an important role as reservoirs of trapped charge but do not provide a significant recombination path. The model arises from observations of steady state photoconductivity in n-type a-Si:H which reveal sublinear behaviour of photocurrent dI extending several orders of magnitude below the ‘dark’ current IO. This is unexpected behaviour, since most models predict linearity for small-signal conditions. Computer simulations using the suggested model reproduce this behaviour and also fit the observed temperature dependence of the index, ?.

    AB - In this paper an approach is suggested to examine photoconductivity in n-type a-Si:H, in which band tails are required to play an important role as reservoirs of trapped charge but do not provide a significant recombination path. The model arises from observations of steady state photoconductivity in n-type a-Si:H which reveal sublinear behaviour of photocurrent dI extending several orders of magnitude below the ‘dark’ current IO. This is unexpected behaviour, since most models predict linearity for small-signal conditions. Computer simulations using the suggested model reproduce this behaviour and also fit the observed temperature dependence of the index, ?.

    U2 - 10.1016/0022-3093(95)00710-5

    DO - 10.1016/0022-3093(95)00710-5

    M3 - Article

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    JF - Journal of Non-Crystalline Solids

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