| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
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 SM ISO690:2012ZALAMAI, Victor, STAMOV, Ivan, SYRBU, Nicolae. Interference of exciton-polariton waves in GaSe nanocrystals. In: Materials Today Communications, 2021, nr. 27, p. 0. ISSN 2352-4928. DOI: https://doi.org/10.1016/j.mtcomm.2021.102355 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
 Materials Today Communications |
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| Numărul 27 / 2021 / ISSN 2352-4928 | ||||||
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| DOI:https://doi.org/10.1016/j.mtcomm.2021.102355 | ||||||
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Absorption, reflection, photoluminescence and wavelength modulation transmission spectra of GaSe single crystals were investigated in temperature rage 300 – 10 K. From fitting of contours of excitonic reflection spectra parameters of excitons as energy of transversal exciton ω0 = 2.1212 eV, longitudinal transversal splitting ωLT = 2.3 meV, effective mass M = 2.5m0, background permittivity εb= 5.2 and damping constant γ = 1.4 were determined. Effective masses of electrons (mC1 = 0.37m0) and holes (mV1 = 2.13m0) in the Brillouin zone center were estimated. An interference of waves of upper and lower branches of exciton-polaritons was found out in wavelength modulation transmission spectra of GaSe nanocrystals. |
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| Cuvinte-cheie Exciton polaritons, Gallium selenide, Interference of additional waves, Optical spectra, Polaritonic branches |
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