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Theoretical evidence for efficient p-type doping of GaN using beryllium

F. Bernardini·Vincenzo Fiorentini·A. Bosin
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Abstract

Ab initio calculations predict that Be is a shallow acceptor in GaN. Its thermal ionization energy is 0.06 eV in wurtzite GaN; the level is valence resonant in the zincblende phase. Be incorporation is severely limited by the formation of Be_3N_2. We show however that co-incorporation with reactive species can enhance the solubility. H-assisted incorporation should lead to high doping levels in MOCVD growth after post-growth annealing at about 850 K. Be-O co-incorporation produces high Be and O concentrations at MBE growth temperatures.

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F. Bernardini, Vincenzo Fiorentini, A. Bosin. 1997-02-24. Theoretical evidence for efficient p-type doping of GaN using beryllium. https://doi.org/10.1063/1.118766

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