A route to low temperature growth of single crystal GaN on sapphire

作者: Pouyan Motamedi , Neda Dalili , Kenneth Cadien

DOI: 10.1039/C5TC01556A

关键词: OpticsBand gapSaturation velocitySingle crystalAtomic layer depositionSapphireGallium nitrideMaterials scienceElectron mobilityEpitaxyOptoelectronics

摘要: Gallium nitride (GaN) was deposited on sapphire at 275 °C, using plasma-enhanced atomic layer deposition. The films are single-crystal for the first ∼5 nm, before they transition to a polycrystalline structure. These structural shifts are reflected in the variations of the refractive index.

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