Browsing by Author "Gasanova, L. G."

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    Citation - WoS: 14
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    Structural and Optical Properties of Ga2se3 Crystals by Spectroscopic Ellipsometry
    (Springer, 2019) Isik, M.; Gasanly, N. M.; Gasanova, L. G.; Babayeva, R. F.; Guler, I.
    Optical and crystalline structure properties of Ga2Se3 crystals were analyzed utilizing ellipsometry and x-ray diffraction (XRD) experiments, respectively. Components of the complex dielectric function (epsilon=epsilon(1)+i epsilon(2)) and refractive index (N=n+ik) of Ga2Se3 crystals were spectrally plotted from ellipsometric measurements conducted from 1.2eV to 6.2eV at 300K. From the analyses of second-energy derivatives of epsilon(1) and epsilon(2), interband transition energies (critical points) were determined. Absorption coefficient-photon energy dependency allowed us to achieve a band gap energy of 2.02eV. Wemple and DiDomenico single effective oscillator and Spitzer-Fan models were accomplished and various optical parameters of the crystal were reported in the present work.