Acceptor state anchoring in gallium nitride

D. Cameron, K.P. O'Donnell, P.R. Edwards, M. Peres, K. Lorenz, M.J. Kappers, M. Boćkowski

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Abstract

The dual nature of the magnesium acceptor in gallium nitride results in dynamic defect complexes. Europium spectator ions reveal switching between two spectrally unique metastable centres, each corresponding to a particular acceptor state. By ion co-implantation of europium and oxygen into GaN(Mg), we produce, in addition, an anchored state system. In doing so we create an abundance of previously unidentified stable centres which we denote as "Eu0(Ox)". We introduce a microscopic model for these centres with oxygen substituting for nitrogen in the bridging site.
Original languageEnglish
Article number102105
Number of pages4
JournalApplied Physics Letters
Volume116
Issue number10
DOIs
Publication statusPublished - 9 Mar 2020

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Keywords

  • rare earth (RE) ions
  • europium
  • gallium nitride

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