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Issue 47, 2012
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Investigation of interstitial hydrogen and related defects in ZnO

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Abstract

We investigate defects in bulk zinc oxide by performing embedded cluster calculations within the density functional theory using the PBE functional. We obtain and discuss equilibrium structures and vibrational spectra of interstitial hydrogen species and of hydrogen complexes at zinc vacancies and at substitutional atoms like copper, beryllium, manganese and calcium in zinc positions. All of these defects differ in their vibrational frequencies which can be assigned to existing experimental data with an agreement that surpasses the results of earlier calculations within the local (spin) density approximation. This leads to a better understanding of these bulk defects and helps to answer some open questions, as e.g. the assignment of a signal observed in infra red spectra at 3326 cm−1. Furthermore, the computed vibrational spectra may serve as a benchmark and assist in the interpretation of future experimental results.

Graphical abstract: Investigation of interstitial hydrogen and related defects in ZnO

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Publication details

The article was received on 20 Aug 2012, accepted on 22 Oct 2012 and first published on 23 Oct 2012


Article type: Paper
DOI: 10.1039/C2CP42928D
Citation: Phys. Chem. Chem. Phys., 2012,14, 16392-16399
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    Investigation of interstitial hydrogen and related defects in ZnO

    J. Koßmann and C. Hättig, Phys. Chem. Chem. Phys., 2012, 14, 16392
    DOI: 10.1039/C2CP42928D

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