Enhanced dipole-dipole interaction of CdSe∕CdS nanocrystal quantum dots inside a planar microcavity
Enhanced dipole-dipole interaction of CdSe∕CdS nanocrystal quantum dots inside a planar microcavity
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DOI：
10.1063/1.2352802
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发表时间：
2006-09
影响因子：
4
通讯作者：
Xiaoyong Wang;C. Shih;Jianfeng Xu;M. Xiao
中科院分区：
文献类型：
--
作者：
Xiaoyong Wang;C. Shih;Jianfeng Xu;M. Xiao
利用时间分辨光致发光技术研究了镶嵌在平面微腔中的紧密堆积的CdSe闪烁CdS量子点的能量传递动力学。与在自由空间中测量的相比，在微腔中观察到从较小到较大的NQD的ET率增加约20%。这是由于在腔模的光谱位置上施主和受主NQD之间增强的偶极-偶极相互作用。
The energy transfer (ET) dynamics of closely packed CdSe∕CdS nanocrystal quantum dots (NQDs) embedded in a planar microcavity were studied by using time-resolved photoluminescence measurements. An increase of ∼20% was observed in the rates of ET from smaller to larger NQDs in the microcavity as compared with those measured in free space. This behavior was attributed to the enhanced dipole-dipole interactions between donor and acceptor NQDs at the spectral positions of the cavity modes.