Photoluminescence of CdTe/CdMgTe Double Quantum Wells with a Two-Dimensional Electron Gas
M. Deresz a, M. Wiater b, G. Karczewski b, T. Wojtowiczb,c and J. Łusakowskia
aFaculty of Physics, University of Warsaw, L. Pasteura 5, PL-02-093 Warsaw, Poland
bInstitute of Physics, PAS, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
cInternational Research Centre MagTop, Aleja Lotników 32/46, PL-02668 Warsaw, Poland
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Magnetophotoluminescence measurements at liquid helium temperatures were carried out on asymmetric double quantum wells based on CdTe/CdMgTe heterostructures. Due to doping with shallow iodine donors, a two-dimensional electron gas was present in the quantum wells. The samples studied differed with the quantum well widths and doping level. We show a resemblance of the luminescence to results obtained on single quantum wells which suggests that in samples studied the quantum wells are not strongly coupled.

DOI: 10.12693/APhysPolA.132.390
topics: CdTe/CdMgTe quantum wells, magnetophotoluminescence