Photoluminescence Spectroscopy of CdTe/ZnTe Self-Assembled Quantum Dots

被引：0
|
作者：
Romcevic, Nebojsa [1 ]
Romcevic, Maja [1 ]
Kostic, Radmila [1 ]
Stojanovic, Dusanka [1 ]
Milutinovic, Aleksandra [1 ]
Trajic, Jelena [1 ]
Karczewski, Grzegorz [2 ]
Galazka, Robert [2 ]
机构：
[1] Inst Phys, Belgrade 11080, Serbia
[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
来源：
INTERNATIONAL JOURNAL OF PHOTOENERGY | 2009年 / 2009卷
基金：
芬兰科学院;
关键词：
D O I：
10.1155/2009/358790
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We present photoluminescence (PL) measurements of two different, 3 monolayers and 12 monolayers (ml), CdTe self-assembled quantum dot (SAQD) samples. The spectra were recorded in the temperature range 20 K-300 K, with photoexcitation over the ZnTe barrier layer. PL spectra displayed two main emission bands. High-energy PL emission (E-1) is ZnTe LO like phonon-(omega(LO) = 204.2 cm(-1) (3 ml), omega(LO) = 207.3 cm(-1) (12 ml)) assisted deexcitation. Dominant low-energy band (E-2) presents the direct deexcitation to ground state of the CdTe quantum dots. Copyright (C) 2009 Nebojsa Romcevic et al.
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页数：4
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