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Density-functional theory study of Au, Ag and Cu defects in germanium

Lookup NU author(s): Professor Patrick Briddon

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Abstract

Gold, silver and copper defects in germanium are modeled using density functional theory. The structures and electrical properties of the substitutional metals are calculated in excellent agreement with experiment. Interstitial Au, Ag and Cu are found to be shallow donors, in disagreement with a previous assignment of Cui to a hole trap in the lower half of the gap. Substitutional-interstitial metal (Mi - Ms) pairs and metal-vacancy pairs (Ms - V) are also investigated. © 2008 Elsevier Ltd. All rights reserved.


Publication metadata

Author(s): Carvalho A, Coutinho J, Jones R, Silva E, Öberg S, Briddon P

Publication type: Article

Publication status: Published

Journal: Materials Science in Semiconductor Processing

Year: 2008

Volume: 11

Issue: 5

Pages: 340-343

ISSN (print): 1369-8001

ISSN (electronic): 1873-4081

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.mssp.2008.10.007

DOI: 10.1016/j.mssp.2008.10.007


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