Inter-Dot Coupling in a Self-Assembled Quantum Dot System
T. Kazimierczuk a, S. Nowak a, J. Suffczyński a, P. Wojnarb , A. Golnik a, J.A. Gaj a and P. Kossacki a
a Institute of Experimental Physics, Warsaw University, Hoża 69, 00-681 Warsaw, Poland
b Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
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Received: 9 06 2007;
We present studies of resonant excitation of self-assembled CdTe/ZnTe quantum dots. Photoluminescence excitation measurements revealed existence of sharp resonances, common for photoluminescence lines attributed to different quantum dot charge states. We conclude from the ensemble of photoluminescence and photoluminescence excitation results that we observe energy transfer in coupled quantum dot pairs.
DOI: 10.12693/APhysPolA.112.321
PACS numbers: 78.67.Hc, 78.55.Et