Room-temperature ordered photon emission from multiexciton states in single CdSe core-shell nanocrystals
Room-temperature ordered photon emission from multiexciton states in single CdSe core-shell nanocrystals
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DOI：
10.1103/physrevlett.94.087403
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发表时间：
2005-03-04
影响因子：
8.6
通讯作者：
Bawendi, M
中科院分区：
文献类型：
--
作者：
Fisher, B;Caruge, JM;Bawendi, M
我们报道了通过湿化学方法合成的单 CdSe(CdZnS) 核（壳）胶体纳米晶体（NC）的多激子态的室温有序多光子发射。还介绍了单个 NC 的双激子和三激子发射的光谱和时间分辨测量。一个简单的四级系统可以准确地对结果进行建模，并提供双激子和三激子辐射寿命和量子产率的估计。
We report room-temperature ordered multiphoton emission from multiexciton states of single CdSe(CdZnS) core(-shell) colloidal nanocrystals (NCs) that are synthesized by wet chemical methods. Spectrally and temporally resolved measurements of biexciton and triexciton emission from single NCs are also presented. A simple four level system models the results accurately and provides estimates for biexciton and triexciton radiative lifetimes and quantum yields.