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Lookup NU author(s): Dr Michael Shaw,
Professor Patrick Briddon
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The Eu, Er and Tm rare earth (RE) impurities in GaN were investigated by using density functional theory. It was observed that RE-VN close pair were stable at temperatures greater than 1000°C for 1 at.% RE doping and possess shallow levels possibly exciting intra-f luminescence in the visible. It was shown that the RE-VGa and RE-interstitial defects possess deep levels which exclude them as sources for visible RE-related luminescence. It was found that the gallium vacancies were bound to the RE with energies 270, 90 and 100 meV for Eu, Er and Tm, respectively.
Author(s): Filhol J-S, Jones R, Shaw MJ, Briddon PR
Publication type: Article
Publication status: Published
Journal: Applied Physics Letters
ISSN (print): 0003-6951
ISSN (electronic): 1520-8842
Publisher: American Institute of Physics
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