Comparison of Optical Properties of CdTe/CdMnTe Quantum Wells Grown by Molecular Beam and Atomic Layer Epitaxy
M. Godlewski, K. Kopalko, 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
Dept. of Physics and Meas. Technol., Linköping Univ., 581 83 Linköping, Sweden
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Optical properties of a series of CdTe/CdMnTe multi quantum well structures grown with MBE and ALE (CdTe quantum wells only) methods are compared. Based on the results of the photoluminescence experiments we conclude that the ALE growth leads to a different lateral scale of quantum well width fluctuations, which results in different exciton properties in two multi quantum well systems studied. In the wells grown with ALE method excitons are less localized. They can migrate in a quantum well plane between quantum well regions varying in thickness by 1 monolayer.
DOI: 10.12693/APhysPolA.90.1012
PACS numbers: 71.35.+z, 78.47.+p, 78.55.Et