Nonradiative Recombination Processes in (CdTe,CdCrTe)/CdMgTe Quantum Well Structures
M. Godlewski, V.Yu. Ivanovi, A.J. Zakrzewski, T. Wojtowicz, G. Karczewski, J. Kossut
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

J.P. Bergman and B. Monemar
Department of Physics and Measurement Technology, Linköping University, 581 83 Linköping, Sweden
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Photoluminescence transitions in (CdTe,CdCrTe)/CdMgTe structure grown by molecular beam epitaxy are studied. Photoluminescence investigations show a very strong reduction of the photoluminescence intensity from chromium doped quantum wells. We explain this fact by a very efficient nonradiative recombination in the chromium-doped quantum wells. The present results indicate that the Auger-type energy transfer from excitons to chromium ions is responsible for the photoluminescence deactivation. The efficiency of this process is evaluated.
DOI: 10.12693/APhysPolA.92.781
PACS numbers: 68.60.-p, 76.70.Hb