Applied Physics Letters 67(9), 1298 (1995).
Photoluminescence on undoped n-type GaN layers grown on 6H-SiC and sapphire reveal residual acceptors with a binding energy of 230 meV. ongly correlated with the graphite susceptor containing the Ga. It is concluded that carbon on nitrogen sites introduces the most shallow acceptor in GaN. The experimental observations supported by an estimate of the acceptor binding energy using effective-mass-theory.
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Contributed by Christian Wetzel from b2-msd2.lbl.gov. on Monday, October 14, 1996 4:43:10 PM
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