Di-carbon defects in annealed highly carbon doped GaAs
Wagner, J, Newman, RC, Davidson, BR, Westwater, SP, Bullough, TJ, Joyce, TB, Latham, CD, Jones, R and Öberg, S (1997) Di-carbon defects in annealed highly carbon doped GaAs Physical Review Letters, 78 (1). pp. 74-77.
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Abstract
Formation of bonded dicarbon C-C centers is deduced from the observation of Raman lines at 1742, 1708, and 1674 cm-1 in GaAs codoped with 12C and 13C after annealing at 850 °C with concomitant loss of vibrational scattering from CAs. The frequencies agree with results of ab initio theory for a C-C split interstitial (deep donor) formed by the trapping of a mobile interstitial C (displaced CAs) atom by an undisplaced CAs acceptor. Other mechanisms of carrier loss are inferred since a weaker Raman triplet is detected at 1859, 1824, and 1788 cm-1 from a different C-C complex.
Item Type: | Article | ||||||||||||||||||||||||||||||
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Divisions : | Faculty of Engineering and Physical Sciences > Chemistry | ||||||||||||||||||||||||||||||
Authors : |
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Date : | 6 January 1997 | ||||||||||||||||||||||||||||||
DOI : | 10.1103/PhysRevLett.78.74 | ||||||||||||||||||||||||||||||
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Additional Information : | Copyright 1997 The American Physical Society. | ||||||||||||||||||||||||||||||
Depositing User : | Symplectic Elements | ||||||||||||||||||||||||||||||
Date Deposited : | 14 Dec 2012 12:43 | ||||||||||||||||||||||||||||||
Last Modified : | 31 Oct 2017 14:53 | ||||||||||||||||||||||||||||||
URI: | http://epubs.surrey.ac.uk/id/eprint/741011 |
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