Exchange interaction and phonon confinement in CdSe quantum dots

被引：91

作者：

Woggon, U

Gindele, F

Wind, O

Klingshim, C

机构：

[1] Institut für Angewandte Physik der Universität Karlsruhe, 76131 Karlsruhe

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.54.1506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fine structure of the lowest (1S(3/2), 1s(e)) electron-hole pair state has been studied for CdSe quantum dots embedded in glass and with sizes R<a(B). Besides the very narrow peaks from the exchange-split lowest pair states (full width at half maximum of 2 meV), two additional structures have been found in luminescence and assigned to confined acoustic photons. The observation of discrete acoustic phonons in the emission spectra verifies the importance of low-frequency acoustic phonons for energy relaxation in quantum dots. The size dependence of the different peaks has been determined and compared with theoretical models.

引用

页码：1506 / 1509

页数：4

共 18 条

[1] ELECTRONIC STATES OF SEMICONDUCTOR CLUSTERS - HOMOGENEOUS AND INHOMOGENEOUS BROADENING OF THE OPTICAL-SPECTRUM [J].