ScAlMgO4 (SCAM) (0001) can be used for metalorganic vapor phase epitaxy (MOVPE) of GaN and lattice-matched In0.17Ga0.83N. GaN grown on SCAM(0001) via a low-temperature GaN buffer layer shows excellent structural quality, indicating that the GaN-SCAM interface is stable during MOVPE. For lattice-matched InGaN on SCAM(0001), a lattice-matched InGaN buffer layer grown at a lower temperature effectively improves the surface and luminescence uniformity. The grown InGaN is nearly unstrained and exhibits photoluminescence peaking at 505 nm at room temperature. These achievements indicate that In0.17Ga0.83N/SCAM lattice-matched templates may pave the way toward longer-wavelength light-emitting and -detecting devices using InGaN with higher In contents. (C) 2014 The Japan Society of Applied Physics
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