State-to-state exciton dynamics in semiconductor quantum dots

被引：158

作者：

Sewall, Samuel L. ^{[1
]}

Cooney, Ryan R. ^{[1
]}

Anderson, Kevin E. H. ^{[1
]}

Dias, Eva A. ^{[1
]}

Kambhampati, Patanjali ^{[1
]}

机构：

[1] McGill Univ, Dept Chem, Montreal, PQ H3A 2K6, Canada

来源：

PHYSICAL REVIEW B | 2006年 / 74卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.74.235328

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Femtosecond carrier relaxation dynamics in colloidal CdSe quantum dots are measured which focus on the early time dynamics for different initial excitonic states. Selecting the initial excitonic states produces a clear influence upon the early time dynamics. The difference between the dynamics when initially populating different excitonic states provides a direct measurement of excitonic relaxation times in strongly confined colloidal semiconductor quantum dots with specificity to electrons and holes. These results furthermore show state specific biexciton interactions.

引用

页数：8

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