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Birefringence and Excitonic Spectra of CdGa2S4 Crystals

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dc.contributor.author STAMOV, I. G.
dc.contributor.author SYRBU, N. N.
dc.contributor.author PARVAN, V. I.
dc.contributor.author ZALAMAI, V. V.
dc.date.accessioned 2019-10-04T08:07:37Z
dc.date.available 2019-10-04T08:07:37Z
dc.date.issued 2013
dc.identifier.citation STAMOV, I. G., SYRBU, N. N., PARVAN, V. I. et al. Birefringence and Excitonic Spectra of CdGa2S4 Crystals. In: ICNBME-2013. International Conference on Nanotechnologies and Biomedical Engineering. German-Moldovan Workshop on Novel Nanomaterials for Electronic, Photonic and Biomedical Applications: proc. of the 2th intern. conf., April 18-20, 2013. Chişinău, 2013, pp. 93-96. ISBN 978-9975-62-343-8. en_US
dc.identifier.isbn 978-9975-62-343-8
dc.identifier.uri http://repository.utm.md/handle/5014/4611
dc.description.abstract The spectral dependence of Δn = no - ne of CdGa2S4 crystals in short- and long- wavelength part of isotropic wavelength λ0 = 485.7 nm (300 К) was determined. It was established what in the case when λ > λ0 Δn is positive and at λ < λ0 it is negative. The wavelength λ0 = 485.7 nm shifts in short - wavelength at decreasing of temperature. Ground and excited states of three excitonic series (A, B and C) with binding energies of 53 meV, 52 meV and 46 meV, respectively were found out at 10 K. The effective mass of electrons for k = 0 was determined form calculation of excitonic spectra (mc|| (Е||с) = 0.21m0 and mc(Ес) = 0.19m0). The holes masses are equal to 0.59m0, 0.71 m0 and 0.71 m0, respectively. The value of valence bands V1 - V2 splitting by crystalline field is corresponding to 24 meV and bands V2 - V3 splitting due to the spin-orbital interaction is equal to 130 meV. en_US
dc.language.iso en en_US
dc.publisher Technical University of Moldova en_US
dc.rights Attribution-NonCommercial-NoDerivs 3.0 United States *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/us/ *
dc.subject semiconductors compound en_US
dc.subject optical constants en_US
dc.subject birefringence en_US
dc.subject excitons en_US
dc.subject semiconductoare compuse en_US
dc.subject constante optice en_US
dc.subject birefringență en_US
dc.subject excitoni en_US
dc.title Birefringence and Excitonic Spectra of CdGa2S4 Crystals en_US
dc.type Article en_US


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