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首页> 外文期刊>Journal of Applied Physics >Metalorganic chemical vapor deposition of InGaN layers on ZnO substrates
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Metalorganic chemical vapor deposition of InGaN layers on ZnO substrates

机译:在ZnO衬底上InGaN层的金属有机化学气相沉积

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摘要

InGaN layers have been grown on (0001) ZnO substrates by metalorganic chemical vapor deposition utilizing a low temperature grown thin GaN buffer. Good quality InGaN films with a wide range of In composition were confirmed by high-resolution x-ray diffraction. Even at high indium concentrations no In droplets and phase separation appeared, possibly due to coherent growth of InGaN on ZnO. Photoluminescence showed broad InGaN-related emissions with peak energy lower than the calculated InGaN band gap, possibly due to Zn/O impurities diffused into InGaN from the ZnO substrate. An activation energy of 59 meV for the InGaN epilayer is determined.
机译:通过使用低温生长的薄GaN缓冲液通过有机金属化学气相沉积在(0001)ZnO衬底上生长InGaN层。通过高分辨率X射线衍射证实了具有宽In组成的高质量InGaN膜。即使在高铟浓度下,也不会出现In小滴和相分离,这可能是由于InGaN在ZnO上的相干生长所致。光致发光显示宽泛的InGaN相关发射,其峰值能量低于计算出的InGaN带隙,这可能是由于Zn / O杂质从ZnO衬底扩散到InGaN中。确定了InGaN外延层的激活能量为59 meV。

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