Core-shell structure and quantum effect of CdSe/HgSe/CdSe quantum dot quantum well
Core-shell structure and quantum effect of CdSe/HgSe/CdSe quantum dot quantum well
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CdSe/HgSe/CdSe量子点量子阱的核壳结构及量子效应
DOI：
10.1006/spmi.2000.0922
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发表时间：
2001
影响因子：
3.1
通讯作者：
Xinfan Huang
中科院分区：
文献类型：
--
作者：
Ling Xu;Kunji Chen;Jianming Zhu;Hongming Chen;Hongbin Huang;Jun Xu;Xinfan Huang
首次采用胶体化学方法合成并控制了核壳结构的CdSe/HgSe/CdSe量子点量子阱（QDQW）纳米晶。高分辨透射电子显微镜（HRTEM）照片显示，CdSe的核心具有纤锌矿晶体结构和HgSe的外壳具有六方结构。观察到HgSe阱中载流子的量子限域效应导致了光致发光峰的增强和蓝移。
Core-shell structure CdSe/HgSe/CdSe quantum dot quantum well (QDQW) nanocrystals were firstly synthesized and well controlled by colloidal chemical methods. High-resolution transmission electron microscope (HRTEM) photographs show that the CdSe core has a wurtzite crystal structure and the shell of HgSe has a hexagonal structure. The enhancement and blue shift of photoluminescence (PL) peak was observed which was attributed to the quantum confinement effect of carriers in the HgSe well.