The effect of the size of self-assembled individual quantum dots on their PL spectra

被引：7
|
作者：
Zora, A. [1 ]
Simserides, C. [2 ,3 ]
Triberis, G. P. [1 ]
机构：
[1] Natl & Kapodistrian Univ Athens, Dept Phys, Athens 15784, Greece
[2] Univ Patras, Dept Mat Sci, Patras EL-26504, Greece
[3] NCSR Demokritos, Inst Mat Sci, Athens EL-15310, Greece
来源：
PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 5, NO 12 2008 | 2008年 / 5卷 / 12期
关键词：
D O I：
10.1002/pssc.200780185
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Based on an analytical expression for the photoluminescense (PL) intensity of individual quantum dots (QDs) in the linear regime, we investigate its dependence upon the size of self-assembled InGaAs QDs. We prove that decreasing the QD size, the PL-emission spectrum moves to higher energy, due to the confinement induced blueshift of the electronic levels and the redshift from the increased Coulomb interaction caused by the compression of the exciton radii. This shift is in agreement with experimental results. Moreover, we show that larger dots provide more intense PL spectra. (C) 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：3806 / +
页数：2
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