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Frenkel excitons and band structure in Sb2S3 single crystals

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dc.contributor.author BERIL, S. I.
dc.contributor.author STAMOV, I. G.
dc.contributor.author TIRON, A. V.
dc.contributor.author ZALAMAI, V. V.
dc.contributor.author SYRBU, N. N.
dc.date.accessioned 2020-12-29T17:48:27Z
dc.date.available 2020-12-29T17:48:27Z
dc.date.issued 2020
dc.identifier.citation BERIL, S. I., STAMOV, I. G., TIRON, A. V. et al. Frenkel excitons and band structure in Sb2S3 single crystals. In: Optical Materials, 2020, V. 101, pp. 109737. ISSN 0925-3467. en_US
dc.identifier.uri https://doi.org/10.1016/j.optmat.2020.109737
dc.identifier.uri http://repository.utm.md/handle/5014/12341
dc.description Access full text – https://doi.org/10.1016/j.optmat.2020.109737 en_US
dc.description.abstract Anisotropy of optical properties of Sb2S3 single crystals was investigated at 11 and 300 K. Ground and excited states of four excitonic states (A, B, C and D) were found out. Parameters of observed excitons and bands V1 – V4 were determined. In Γ point of Brillouin zone the effective masses of electrons in the bottom conduction band (mc* = 1.08m0) and of holes in four top valence bands (mv1*, mv2* = 2.91m0 and mv3*, mv4* = 3.12m0) were estimated. The splitting magnitudes of valence bands V1 – V2 in the Brillouin zone center by crystal field (Δcf = 20 meV) and by spin-orbital interaction (Δso = 375 meV) were calculated. V3 and V4 bands have splitting of 198 meV. The observed features were interpreted on the base of existing theoretically calculated band structure and symmetries of excitons in Γ point of Brillouin zone for single crystals of orthorhombic symmetry (Pnma). en_US
dc.language.iso en en_US
dc.publisher Elservier 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 antimony trisulfide en_US
dc.subject optical spectroscopy en_US
dc.subject spectroscopy en_US
dc.subject reflection spectra en_US
dc.subject absorption spectra en_US
dc.subject spectra en_US
dc.subject bands en_US
dc.subject excitons en_US
dc.title Frenkel excitons and band structure in Sb2S3 single crystals en_US
dc.type Article en_US


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