首页> 外文会议>International Conference on Nitride Semiconductors(ICNS-5); 20030525-20030530; Nara; JP >Growth of high-quality non-polar AlN on 4H-SiC(11-20) substrate by molecular-beam epitaxy
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Growth of high-quality non-polar AlN on 4H-SiC(11-20) substrate by molecular-beam epitaxy

机译:分子束外延在4H-SiC(11-20)衬底上生长高质量非极性AlN

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摘要

Non-polar AlN epitaxial growth on SiC substrates with the (11-20) face, which is parallel to the < 0001 > direction, has been investigated. AlN(11-20) epilayers were grown on 6H- and 4H-SiC(11-20) substrates by molecular-beam epitaxy (MBE) using elemental Al and rf plasma-excited nitrogen. The crystalline structure of the AlN layer was strongly influenced by the stacking structure of the SiC substrate. A considerably smooth AlN(11-20) layer with an rms roughness of 0.3 nm was obtained on the 4H-SiC(11-20) substrate. From the results of X-ray diffraction (XRD), the superior crystalline quality of the AlN(11 -20) layer on the 4H-SiC(11-20) substrate was clearly shown.
机译:已经研究了在(11-20)面平行于<0001>方向的SiC衬底上的非极性AlN外延生长。使用元素铝和射频等离子体激发氮,通过分子束外延(MBE)在6H和4H-SiC(11-20)衬底上生长AlN(11-20)外延层。 AlN层的晶体结构受到SiC衬底的堆叠结构的强烈影响。在4H-SiC(11-20)基板上获得了均方根粗糙度为0.3 nm的相当光滑的AlN(11-20)层。根据X射线衍射(XRD)的结果,清楚地显示了4H-SiC(11-20)衬底上的AlN(11 -20)层的优异结晶质量。

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