| Conţinutul numărului revistei |
| Articolul precedent |
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 SM ISO690:2012STAMOV, Ivan, SYRBU, Nicolae, URSACHI, Veaceslav, PARVAN, Vladimir. Optical spectra and energy band structure of AgAsS 2 crystals. In: Optics Communications, 2012, vol. 285, pp. 5184-5190. ISSN 0030-4018. DOI: https://doi.org/10.1016/j.optcom.2012.07.131 |
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  Optics Communications |
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| Volumul 285 / 2012 / ISSN 0030-4018 | ||||||
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| DOI:https://doi.org/10.1016/j.optcom.2012.07.131 | ||||||
| Pag. 5184-5190 | ||||||
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Ground and excited states of three exciton series are observed in the region of fundamental absorption edge of AgAsS 2 crystals. The contours of exciton reflection spectra are calculated and the main parameters of excitons and energy bands are determined in the center of Brillouin zone. The optical reflection spectra are investigated at 30 K in Ec and E⊥c polarizations in AgAsS 2 crystals in the region of 2-6 eV. The optical functions are calculated from the reflection spectra and a scheme of electronic transitions responsible for peculiarities of reflection spectra deep into the absorption band is proposed. |
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| Cuvinte-cheie Absorption and reflection spectra, Band structure, Excitons, Optical constants, Semiconductor compound |
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