InAs/AlGaAs量子点双峰尺寸分布的近场光谱研究
Near-field spectroscopy of bimodal size distribution of InAs/AlGaAs quantum dots
摘要：
利用近场扫描光学显微镜（NSOM）对InAs/AlGaAs量子点的空间结构进行了高分辨光致发光（PL）光谱研究。荧光光谱呈现双峰分布，这与单量子点的双峰尺寸分布有关。特别地，通过PL的NSOM图像，可以直接观察到由双峰光谱分布表示的单个量子点的尺寸差异。
英文摘要：
We report on high-resolution photoluminescence (PL) spectroscopy of spatial structure of InAs/AlGaAs quantum dots (QDs) by using a near-field scanning optical microscope (NSOM). The double-peaked distribution of PL spectra is clearly observed, which is associated with the bimodal size distribution of single QDs. In particular, the size difference of single QDs, represented by the doublet spectral distribution, can be directly observed by the NSOM images of PL.
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