کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1790182 1524418 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of semi-polar GaN on GaAs substrates
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Characterization of semi-polar GaN on GaAs substrates
چکیده انگلیسی

Cubic GaN was grown on GaAs(0 0 1). The GaN layers were found to exhibit residual strain with a measured a-lattice parameter of 4.4990 Å. The GaN layers were grown on GaAs(1 1 0) forming cubic crystal structure with an a-lattice parameter of 4.4947 Å for the LT-GaN buffer layers and a hexagonal structure with an a-lattice parameter of 2.7463 Å and a c-lattice parameter of 5.5882 Å for the main GaN layers. Comparisons between the two GaAs substrate orientations, GaN on GaAs(1 1 0) showed a smoother surface (Rrms of 5.369 nm) than that on GaAs(0 0 1) (Rrms of 9.776 nm). It was shown by a TEM investigation that semi-polar GaN layers with low defect densities could be grown by MOCVD on GaAs(1 1 0) substrates. The TEM results indicated GaN[112¯0]//GaAs[1 1 0] and GaN(101¯3)//GaAs(1 1 0) crystal orientations.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 411, 1 February 2015, Pages 76–80
نویسندگان
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