کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1677182 1518105 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Self-assembled InN quantum dots grown on AlN/Si(111) and GaN/Al2O3(0001) by plasma-assisted molecular-beam epitaxy under Stranski–Krastanow mode
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Self-assembled InN quantum dots grown on AlN/Si(111) and GaN/Al2O3(0001) by plasma-assisted molecular-beam epitaxy under Stranski–Krastanow mode
چکیده انگلیسی

We demonstrate that InN quantum dots (QDs) can be spontaneously formed on AlN and GaN surfaces by plasma-assisted molecular-beam epitaxy under the Stranski–Krastanow (S–K) mode. Both Si(111) wafers and metal–organic chemical vapor deposition grown GaN/Al2O3(0001) templates were used as substrates in this work. Silicon is particularly interesting as a substrate for InN QD applications because of its electrical conductivity and transparency in the near-infrared. By using reflection high-energy electron diffraction (RHEED), the formation process of InN QDs can be monitored in situ. We observed the 2D–3D transition of S–K growth mode and the lattice constant varied dramatically at the 2D–3D transition point from AlN to InN lattice constant. Furthermore, from the ex situ atomic force microscopy and scanning electron microscopy measurements, we directly imaged InN QDs on the AlN surface with an average diameter of ∼ 14 nm and high areal density of ∼ 1.6 × 1011 cm− 2.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 494, Issues 1–2, 3 January 2006, Pages 79–83
نویسندگان
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