Temperature dependence of the exciton transition in semiconductor quantum dots

被引：49

作者：

Liptay, Thomas J. ^{[1
]}

Ram, Rajeev J. ^{[1
]}

机构：

[1] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 22期

关键词：

D O I：

10.1063/1.2400107

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors measure the temperature dependence of the first absorption feature (dE/dT) for different sizes of CdSe/ZnS nanocrystals. In contrast to previous experiments, they find that dE/dT is experimentally identical for all nanocrystal sizes considered and agrees well with the bulk CdSe value. They show that a first order model that only considers the exciton confinement energy can explain the existing experimental dE/dT values for both epitaxial quantum dots (InAs, In0.6Ga0.4As, GaAs) and colloidal nanocrystals (CdSe, PbS, PbSe). (c) 2006 American Institute of Physics.

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