Modulated and transient photoconductivity in a-As2 Se3

C. Main, D. P. Webb, R. Bruggemann, S. Reynolds

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    32 Citations (Scopus)


    Modulated photocurrent phase shift measurements (MPC) have been used to probe the valence band tail density of states (DOS) in a-As2 Se3. In the absence of obvious structure, use of optical bias to define a ‘thermalisation energy limit’ allows MPC to be used to determine the attempt-to-escape frequency. Computer modelling of steady state and transient photoconductivity reveals inconsistencies in a charged defect interpretation.

    Original languageEnglish
    Pages (from-to)951-954
    Number of pages4
    JournalJournal of Non-Crystalline Solids
    Publication statusPublished - 1991


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