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International Journal of Photoenergy
Volume 2009, Article ID 358790, 4 pages
Research Article

Photoluminescence Spectroscopy of CdTe/ZnTe Self-Assembled Quantum Dots

1Institute of Physics, 11080 Belgrade, Serbia
2Institute of Physiscs, Polish Academy of Science, 02-668 Warsaw, Poland

Received 26 June 2009; Revised 27 October 2009; Accepted 9 November 2009

Academic Editor: Mohamed Sabry Abdel-Mottaleb

Copyright © 2009 Nebojša Romčević et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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 is ZnTe LO like phonon- ( = 204.2  (3 ml), = 207.3  (12 ml)) assisted deexcitation. Dominant low-energy band presents the direct deexcitation to ground state of the CdTe quantum dots.