Meyer-Neldel rule for Cu (I) diffusion in In2S3 layers

Albert Juma, Henry Wafula, Elke Wendler, Thomas Dittrich

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    The nature of barriers for atomic transport in In2S3 layers has been varied by addition of chlorine. Diffusion of Cu(I) from a removable CuSCN source was used to probe the variation of the barriers. The Meyer-Neldel (compensation) rule was observed with a Meyer-Neldel energy (E MN) and a proportionality prefactor (D00) amounting to 40 meV and 5 × 10-14 cm2/s, respectively. D 00 shows that the elementary excitation step is independent of the specific mechanism and nature of the barrier including different densities of Cl in In2S3. The value of EMN implies that coupling of the diffusing species to an optical-phonon bath is the source of the multiple excitations supplying the energy to overcome the diffusion barriers.

    Original languageEnglish
    Article number053703
    JournalJournal of Applied Physics
    Volume115
    Issue number5
    DOIs
    Publication statusPublished - 2014

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    supplying
    elementary excitations
    chlorine
    baths
    energy
    probes
    excitation

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

    Cite this

    Juma, Albert ; Wafula, Henry ; Wendler, Elke ; Dittrich, Thomas. / Meyer-Neldel rule for Cu (I) diffusion in In2S3 layers. In: Journal of Applied Physics. 2014 ; Vol. 115, No. 5.
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    Meyer-Neldel rule for Cu (I) diffusion in In2S3 layers. / Juma, Albert; Wafula, Henry; Wendler, Elke; Dittrich, Thomas.

    In: Journal of Applied Physics, Vol. 115, No. 5, 053703, 2014.

    Research output: Contribution to journalArticle

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    T1 - Meyer-Neldel rule for Cu (I) diffusion in In2S3 layers

    AU - Juma, Albert

    AU - Wafula, Henry

    AU - Wendler, Elke

    AU - Dittrich, Thomas

    PY - 2014

    Y1 - 2014

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    AB - The nature of barriers for atomic transport in In2S3 layers has been varied by addition of chlorine. Diffusion of Cu(I) from a removable CuSCN source was used to probe the variation of the barriers. The Meyer-Neldel (compensation) rule was observed with a Meyer-Neldel energy (E MN) and a proportionality prefactor (D00) amounting to 40 meV and 5 × 10-14 cm2/s, respectively. D 00 shows that the elementary excitation step is independent of the specific mechanism and nature of the barrier including different densities of Cl in In2S3. The value of EMN implies that coupling of the diffusing species to an optical-phonon bath is the source of the multiple excitations supplying the energy to overcome the diffusion barriers.

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