Time Resolved Photoluminescence Study of the Wide (Cd,Mn)Te/(Cd,Mg)Te Quantum Well
J. Kutrowskaa, P. Bugajnya, M. Baranowskia, L. Bryjaa, M. Sypereka, A. Wójsa, J. Misiewicza, M. Wiaterb, G. Karczewskib and T. Wojtowiczc
aInstitute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
bInstitute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland
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The static and dynamic properties of excitons and trions in a 80 nm wide Cd1-xMnxTe/Cd0.7Mg0.3Te quantum well with extremely small Mn content (x=0.00027) have been studied by means of time-integrated and time-resolved photoluminescence experiment at low and elevated temperatures. The trion binding energy has been estimated to be 2.6 ± 0.8 meV. The exciton and trion lifetimes have been measured to be ≈ 150 ps, and ≈ 200 ps, respectively. The temperature dependence of both lifetimes together with the multicomponent character of the PL decay process suggest a spatial localization of excitons and trions in the investigated quantum well.

DOI: 10.12693/APhysPolA.124.895
PACS numbers: 78.55.Et, 78.47.D-, 78.67.De