Room-temperature ordered photon emission from multiexciton states in single CdSe core-shell nanocrystals

被引：154

作者：

Fisher, B

Caruge, JM

Zehnder, D

Bawendi, M

机构：

[1] MIT, Dept Chem, Cambridge, MA 02139 USA

[2] Quantum Dot Corp, Hayward, CA 94545 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.94.087403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

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页数：4

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