Preparation And Properties Of Gan Films On Gaas Substrates
Chinese Physics Letters(2004)
摘要
Polycrystalline gallium nitride films with hexagonal structure were prepared by a post-nitridation technique. A strong blue photoluminescence located at 458 nm and a UV photoluminescence located at 368 nm were observed at room temperature. The 368 nm peak is PL from band-edge emission. The blue luminescence is attributed to the transition from deep donor level to the valence band.
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关键词
room temperature,valence band
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