Phonon interaction of single excitons in CdSe/ZnSe quantum dot structures

被引：9

作者：

Gindele, F ^{[1
]}

Hild, K

Langbein, W

Woggon, U

Leonardi, K

Hommel, D

Kümmell, T

Bacher, G

Forchel, A

机构：

[1] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

[2] Univ Bremen, Inst Festkorperphys, D-28359 Bremen, Germany

[3] Univ Wurzburg, D-97074 Wurzburg, Germany

来源：

JOURNAL OF LUMINESCENCE | 1999年 / 83-4卷

关键词：

single excitons; photon interaction; CdSe/ZnSe; quantum dots;

D O I：

10.1016/S0022-2313(99)00116-7

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In epitaxially grown CdSe quantum dots the LO-phonon coupling is studied by analysing phonon-assisted recombination of a single zero-dimensional exciton. Due to the microscopic disorder of Cd-ions the observed line shape of the LO-phonon replica shows an inhomogeneous broadening and cannot be described by a single Lorentzian peaking at one distinct phonon energy. With increasing excitation density, the radiative decay of biexcitons with a binding energy of 22 meV is observed. Both exciton and corresponding biexciton reveal LO-phonon replica intensities of similar to 3% of the respective zero-phonon emission. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：305 / 308

页数：4

共 14 条

[1] Multiexciton spectroscopy of a single self-assembled quantum dot [J].