ACTA

Comparison of Exciton Properties in Quantum Well Structures of ZnCdSe/ZnSe and ZnSe/ZnMgSSe

M. Godlewski^a, V.Yu. Ivanov^a, J.P. Bergman^b, B. Monemar^b, K. Leonardi^c, M. Behringer^c and D. Hommel^c
^aInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
^bDept. Phys. & Meas. Technol., Linköping Univ., 581 83 Linköping, Sweden
^cInstitute of Solid State Physics, Bremen University, 28334 Bremen, Germany

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Properties of excitons in quantum well structures of ZnCdSe/ZnSe and ZnSe/ZnMgSSe are compared. In ternary ZnCdSe quantum wells and at low temperature excitons are strongly localised. Weaker localization is observed in quantum well structures of ZnSe/ZnMgSSe. Present studies suggest formation of negatively charged excitons in the latter structures.

DOI: 10.12693/APhysPolA.94.313
PACS numbers: 71.35.-y, 73.20.Mf, 73.20.Dx