ACTA

Time Resolved Photoluminescence Study of the Wide (Cd,Mn)Te/(Cd,Mg)Te Quantum Well

J. Kutrowska^a, P. Bugajny^a, M. Baranowski^a, L. Bryja^a, M. Syperek^a, A. Wójs^a, J. Misiewicz^a, M. Wiater^b, G. Karczewski^b and T. Wojtowicz^c
^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 Cd_1-xMn_xTe/Cd_0.7Mg_0.3Te 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