Optical properties of CdTe/ZnTe self-assembled quantum dots: Raman and photoluminescence spectroscopy

被引：12
作者：
Gilic, M. [1 ]
Romcevic, N. [1 ]
Romcevic, M. [1 ]
Stojanovic, D. [1 ]
Kostic, R. [1 ]
Trajic, J. [1 ]
Dobrowolski, W. D. [2 ]
Karczewski, G. [2 ]
Galazka, R. [2 ]
机构：
[1] Univ Belgrade, Inst Phys, Belgrade 11080, Serbia
[2] Polish Acad Sci, Inst Phys, PL-02688 Warsaw, Poland
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 579卷
关键词：
Nanostructured materials; Optical properties; Light absorption and reflection; SCATTERING; ISLANDS; MATRIX;
D O I：
10.1016/j.jallcom.2013.06.081
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：
The properties of 3 monolayers (ml) CdTe self-assembled quantum dot (SAQD) sample are investigated by means of Raman and photoluminescence (PL) spectroscopy. The PL spectrum is characterized by two main emission peaks, both connected with the existence of QDs. One presents direct deexcitation to ground state and the other one is optical phonon (omega = 204.2 cm(-1)) assisted deexcitation. One-phonon Raman spectra at room temperature show surface-optical phonon at 201 cm(-1). At temperatures below 200 K, multiphonon processes are registered. Multiphonon maximum depends on the temperature, and laser energy. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：330 / 335
页数：6
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