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Optically active point defects in high quality single crystal diamond

Lookup NU author(s): Dr Jon Goss, Professor Patrick Briddon

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Abstract

We use density functional theory to investigate the optical properties of vacancy di-nitrogen, vacancy-nitrogen-hydrogen and vacancy di-hydrogen defects. The first is a common defect found in irradiated natural type IaA diamonds while the second is found in as-grown CVD diamond. The last has not yet been detected. We find that these defects possess at least two charge states which can lead to photochromic behaviour. In the neutral and negative states, the three defects have optical bands due to internal transitions and two weaker optical absorption bands coming from charge state changes. Thus at least four absorption bands are expected for these defects. Vibrational modes of the hydrogen defects are reported. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim


Publication metadata

Author(s): Goss JP, Briddon PR, Pinto H, Jones R

Publication type: Article

Publication status: Published

Journal: Physica Status Solidi A: Applications and Materials Science

Year: 2010

Volume: 207

Issue: 9

Pages: 2049-2053

Print publication date: 01/09/2010

ISSN (print): 1862-6300

ISSN (electronic): 1862-6319

Publisher: Wiley - VCH Verlag GmbH

URL: http://dx.doi.org/10.1002/pssa.201000010

DOI: 10.1002/pssa.201000010


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