Photoluminescence of tetrahedral quantum-dot quantum wells

被引：8
|
作者：
Fonoberov, VA
Pokatilov, EP
Fomin, VM
Devreese, JT [1 ]
机构：
[1] Univ Antwerp, Dept Nat Kunde, B-2610 Antwerp, Belgium
[2] State Univ Moldova, Dept Theoret Phys, Lab Phys Multilayer Struct, MD-2009 Kishinev, Moldova
[3] Univ Calif Riverside, Dept Elect Engn, NanoDevice Lab, Riverside, CA 92521 USA
[4] Tech Univ Eindhoven, NL-5600 MB Eindhoven, Netherlands
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2005年 / 26卷 / 1-4期
关键词：
photoluminescence; excitons; exciton phonon interaction; quantum-dot quantum wells; non-adiabatic approach;
D O I：
10.1016/j.physe.2004.08.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Taking into account the tetrahedral shape of a quantum-dot quantum well (QDQW) when describing excitonic states, phonon modes and the exciton-phonon interaction in the structure, we obtain within a non-adiabatic approach a quantitative interpretation of the photoluminescence (PL) spectrum of a single CdS/HgS/CdS QDQW. We find that the exciton ground state in a tetrahedral QDQW is bright, in contrast to the dark ground state for a spherical QDQW. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：63 / 66
页数：4
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