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Radiative Transitions in Sm2+ Doped ZnAl2Se4 and KCl Crystals

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dc.contributor.author TIRON, Andrew
dc.contributor.author ZALAMAI, Victor
dc.contributor.author RUSU, Emil
dc.contributor.author SYRBU, Nicolae
dc.contributor.author BEJAN, Nicolae
dc.date.accessioned 2019-07-05T11:44:34Z
dc.date.available 2019-07-05T11:44:34Z
dc.date.issued 2017
dc.identifier.citation TIRON, Andrew, ZALAMAI, Victor, RUSU, Emil et al. Radiative Transitions in Sm2+ Doped ZnAl2Se4 and KCl Crystals. In: Microelectronics and Computer Science: proc. of the 9th intern. conf., October 19-21, 2017. Chişinău, 2017, pp. 107-110. ISBN 978-9975-4264-8-0. en_US
dc.identifier.isbn 978-9975-4264-8-0
dc.identifier.uri http://repository.utm.md/handle/5014/3248
dc.description.abstract Photoluminescence spectra of ZnAl2Se4:Sm2+ and KCl:Sm2+ due to the processes of charge carriers recombination from levels 5Dj,5Lj,5Gj and 5Hj (4f55d1) on levels 7Fj of samarium ions were investigated. The broad photoluminescence band at energies 1.6 - 1.9 eV due to optical transitions of electrons form 4f shell of samarium ions to 1s level of vacancies was discovered. Emitted energy of it was absorbed by transitions from 7Fj to 5Dj levels. An up-conversion process - electron excitation form 7Fj levels to 5D0, 5D1, 5D2 levels with simultaneous electron transitions to higher energy states 5D3, 5D4, 5Lj, 5Gj, 5Hj with subsequent recombination to 7Fj levels with energy emission in short-wavelength region were found out and investigated. en_US
dc.language.iso en en_US
dc.publisher Technical University 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 impurity energy levels en_US
dc.subject photoluminescence spectra en_US
dc.subject rare-earth elements en_US
dc.subject radiative recombination en_US
dc.subject samarium ions en_US
dc.subject crystals en_US
dc.subject energie a impurității en_US
dc.subject spectre a fotoluminescenței en_US
dc.subject elementele rare en_US
dc.subject recombinare radiativă en_US
dc.subject ioni de samarium en_US
dc.subject cristale en_US
dc.title Radiative Transitions in Sm2+ Doped ZnAl2Se4 and KCl Crystals en_US
dc.type Article en_US


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