Wavelength modulated optical spectra of TlGaS2 crystals

Bejan Nicolae; Nemerenco Lucreţia; Masnik Alisa

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2019-03-14 15:45

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BEJAN, Nicolae, NEMERENCO, Lucreţia, MASNIK, Alisa. Wavelength modulated optical spectra of TlGaS2 crystals. In: Telecommunications, Electronics and Informatics, Ed. 5, 20-23 mai 2015, Chișinău. Chișinău, Republica Moldova: 2015, Ed. 5, pp. 155-162. ISBN 978-9975-45-377-6.

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Telecommunications, Electronics and Informatics
Ed. 5, 2015

Conferința "Telecommunications, Electronics and Informatics"
5, Chișinău, Moldova, 20-23 mai 2015

Wavelength modulated optical spectra of TlGaS₂ crystals

Pag. 155-162

Bejan Nicolae, Nemerenco Lucreţia, Masnik Alisa

Technical University of Moldova

Disponibil în IBN: 21 mai 2018

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Rezumat

Wavelength modulated reflection spectra measured at temperatures 14 K and 300 K in E||a and E||b polarizations for TlGaS2 crystals were investigated. The ground and excited states of excitons B2u in E||a polarization and B3u in E||b polarization were observed and the main parameters of exitons and bands were determined. The optical functions for wide energies (2 - 6 eV) were calculated by Kramers-Kronig analysis of reflection spectra. The wavelengths of isotropic points in TlGaS2 crystals were defined.

Cuvinte-cheie
Semiconductor compound, Optical absorption and reflection spectra, wavelength modulated spectra, Kramers-Kronig relations, Optical constants, Band structure

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