Computer modelling of non-equilibrium multiple-trapping and hopping transport in amorphous semiconductors

C. Main, J. M. Marshall, S. Reynolds, M. J. Rose, R. Bruggemann

    Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)

    1 Citation (Scopus)

    Abstract

    In this paper we demonstrate a simple computational procedure for the simulation of transport in a disordered semiconductor in which both multi-trapping and hopping processes are occurring simultaneously. We base the simulation on earlier work on hopping transport, which used a Monte-Carlo method. Using the same model concepts, we now employ a stochastic matrix approach to speed computation, and include also multi-trapping transitions between localised and extended states. We use the simulation to study the relative contributions of extended state conduction (with multi-trapping) and hopping conduction (via localised states) to transient photocurrents, for various distributions of localised gap states, and as a function of temperature. The implications of our findings for the interpretation of transient photocurrents are examined.
    Original languageEnglish
    Title of host publicationAmorphous and nanocrystalline silicon science and technology--2005
    Subtitle of host publicationSymposium March 28-April 1, 2005, San Francisco, California, U.S.A.
    EditorsRobert W. Collins
    Place of PublicationWarrendale, Pa.
    PublisherMaterials Research Society
    Pages513-518
    Number of pages6
    ISBN (Print)1558998152
    Publication statusPublished - 2005
    EventSymposium A: Amorphous and Nanocrystalline Silicon Science and Technology - San Francisco, United States
    Duration: 28 Mar 20051 Apr 2005
    http://www.mrs.org/s05-program-a/

    Publication series

    NameMaterials Research Society symposium proceedings
    Volume862

    Conference

    ConferenceSymposium A: Amorphous and Nanocrystalline Silicon Science and Technology
    CountryUnited States
    CitySan Francisco
    Period28/03/051/04/05
    Internet address

    Fingerprint Dive into the research topics of 'Computer modelling of non-equilibrium multiple-trapping and hopping transport in amorphous semiconductors'. Together they form a unique fingerprint.

    Cite this