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Interband optical transitions in the region of exciton resonances in In0.3Ga0.7As/GaAs quantum wells

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dc.contributor.author SYRBU, N.
dc.contributor.author DOROGAN, A.
dc.contributor.author DOROGAN, V.
dc.contributor.author VIERU, T.
dc.contributor.author URSAKI, V.
dc.contributor.author ZALAMAI, V.
dc.date.accessioned 2020-09-17T11:42:40Z
dc.date.available 2020-09-17T11:42:40Z
dc.date.issued 2012
dc.identifier.citation SYRBU, N., DOROGAN, A., DOROGAN, V. et al. Interband optical transitions in the region of exciton resonances in In0.3Ga0.7As/GaAs quantum wells. In: Moldavian Journal of the Physical Sciences. 2012, vol. 11 (4), pp. 319-332. ISSN 1810-648X. en_US
dc.identifier.issn 1810-648X
dc.identifier.uri http://repository.utm.md/handle/5014/9542
dc.description.abstract Reflectance spectra of quantum wells (QWs) with 8-nm-thick In0.3Ga0.7As layers with a 9-nm-thick GaAs barrier layer up and a 100-nm-thick barrier layer down were investigated in the spectral range of 0.5–1.6 eV in S- and P- polarizations at an incidence angle close to the normal (7о) as well as at a Brewster angle (76о). Narrow lines at 0.9021; 1.0161; 1.1302; 1.1973; and 1.2766 eV were observed in the reflectance and absorption spectra, which are due to hh,lh1-e1(1s), hh1,lh1 -e2(1s), hh2,lh2 -e2(1s), and hh3,lh3,-e3(1s) transitions, as well as features due to quantum dotes (QDs) formed at the interface of nanolayers and the buffer. The contours of reflectance and absorption spectra are calculated with a single-oscillator, and many-oscillator models. The oscillator strength and the damping parameter are estimated for the optical transitions in QWs and QDs. The radiative life time of the exciton in a QW and a QD was found. en_US
dc.language.iso en en_US
dc.publisher Academy of Sciences 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 exciton resonances en_US
dc.subject nanolayers en_US
dc.subject semiconductors en_US
dc.subject semiconductor nano-heterostructures en_US
dc.subject optical transitions en_US
dc.title Interband optical transitions in the region of exciton resonances in In0.3Ga0.7As/GaAs quantum wells en_US
dc.type Article en_US


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