ACTA

Optical Properties of Zn_1-xMg_xSe Epilayers Studied by Spectroscopy Methods

G. Głowacki^a, A. Gapiński^a, B. Derkowska^a, W. Bała^a and B. Sahraoui^b
^aInstitute of Physics, N. Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland
^bLaboratoire des Propriétés Optiques des Matériaux et Applications (POMA), Université d'Angers, 2, Boulevard Lavoisier, 49045, Angers Cedex 01, France

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Linear optical properties of the Zn_1-xMg_xSe (0 ≤ x ≤ 0.4) alloys have been studied using reflectance, spectroscopic ellipsometry and photoluminescence measurements. The refractive indices of Zn_1-xMg_xSe epilayers were investigated as a function of Mg composition (0 ≤ x ≤ 0.4). The energies of band gap E_g and spin-orbit splitting E_g+Δ, have been determined. These energies are shifted gradually to higher values with increasing Mg content.

DOI: 10.12693/APhysPolA.94.321
PACS numbers: 78.66.-w, 78.20.Jq, 78.66.Hf