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m面GaN平面内结构和光学各向异性研究

Chao Wu,Zili Xie, Rong Zhang,Zeng Zhang,Bin Liu, Yi Li,Deyi Fu,Xiangqian Xiu,Ping Han,Yi Shi,Youdou Zheng

Acta Physica Sinica（2008）

Cited 0|Views48
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Abstract
采用金属有机物化学气相淀积方法在铝酸锂LiAlO2衬底上外延生长m面GaN薄膜.X射线衍射测量的结果表明所得薄膜具有较理想的m面晶体取向,并对其各向异性的应变进行了计算,摇摆曲线的测量发现样品存在明显的面内结构各向异性.采用偏振光致发光研究材料的面内光学各向异性,发现随着偏振角度的改变,发光峰的峰位和强度均有明显变化,并用对称性破缺导致价带子带劈裂的理论对结果进行了解释.
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Key words
m-plane GaN,Polarized photoluminescence,Structural anisotropy
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