Heteroepitaxy of GaN and related materials with a novel two-flow MOVPE horizontal reactor
1997
Abstract The behaviour and role of a GaN buffer layer has been investigated in relation with GaN and InGaN heteroepitaxy using a specially designed two-flow horizontal metalorganic vapour phase epitaxy. It is demonstrated that InGaN layers with improved crystal quality can be obtained when a GaN underlying layer is carefully prepared by a two-step growth process consisting of the growth of a thick GaN intermediate layer ( T s = 950°C) prepared on a thin low-temperature GaN buffer ( T s = 600°C).
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