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OALib Journal期刊
ISSN: 2333-9721
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gan纳米柱的量子效率研究
DOI: 10.13232/j.cnki.jnju.2014.03.010
李扬扬, 陈鹏, *, 蒋府龙, 杨国锋, 刘斌, 谢自立, 修向前, 韩平, 赵红, 华雪梅, 施毅, 张荣, 郑有？
Keywords: gan纳米柱,光致发光(pl),量子效率
Abstract:
主要通过低温和室温变功率光致发光（pl）谱的实验手段，研究了gan纳米柱和对应薄膜（作为参考）的量子效率表现。实验中发现在室温，激发光功率为0.5mw时，gan纳米柱的积分pl强度是薄膜的12.2倍，这表明gan纳米柱具有比薄膜更高的内量子效率和光引出效率。另外，依据高低温积分pl强度比的方法计算得到激发光功率0.5mw时，gan纳米柱的内量子效率低于薄膜，该计算结果违背由实验现象得到的结果，这表明该内量子效率的计算方法是不合适的，因而建立了一种新模型，得到gan纳米柱和薄膜的内量子效率比随激发光功率的变化规律，结果表明gan纳米柱的内量子效率表现显著优于薄膜。
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