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Growth of GaN/AIN Quantum Dots on SiC(0001) by Plasma-Assisted MBE

机译:等离子体辅助MBE在SiC(0001)上生长GaN / AIN量子点

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摘要

The GaN/AIN system grown on SiC (0001) by plasma assisted molecular-beam epitaxy presents N-polarity. Based on reflection high-energy electron diffraction (RHEED) experiments, we demonstrate that 1 ML of Ga behaves as a surfactant during the growth of GaN on AIN (0001) surface, which makes possible to synthesize GaN quantum dots using the Modified Stranski-Krastanow growth mode. The N-polarity GaN islands formed on A1N (0001) are hexagonal pyramids with {1103} facets. The island density can be controlled in the 3 - 9 x 10~(10) cm~(-2) range.
机译:通过等离子体辅助分子束外延在SiC(0001)上生长的GaN / AIN系统呈现N极性。基于反射高能电子衍射(RHEED)实验,我们证明1 ML的Ga在AIN(0001)表面上的GaN生长过程中起表面活性剂的作用,这使得使用改良的Stranski-Krastanow合成GaN量子点成为可能增长模式。在AlN(0001)上形成的N极性GaN岛是具有{1103}晶面的六边形金字塔。岛密度可以控制在3-9 x 10〜(10)cm〜(-2)范围内。

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