Luminescence Spectra of Poly(methylmethacrylate)/ZnS:Eu(III),Tb(III) Composites


Citar

Texto integral

Acesso aberto Acesso aberto
Acesso é fechado Acesso está concedido
Acesso é fechado Somente assinantes

Resumo

Colloidal zinc sulfide solutions have been prepared by reacting zinc trifluoroacetate and thioacetamide in methyl methacrylate as a reaction medium, and europium and terbium salts have been added to the solution. Using methyl methacrylate block polymerization, we have synthesized PMMA/ZnS, PMMA/ZnS:Eu(III), PMMA/ZnS:Tb(III), and PMMA/ZnS:Eu(III),Tb(III) composites. The luminescence of the composites is due to charge recombination at energy levels of structural defects and impurities in ZnS and also to 5D07Fj and 5D47Fj electronic transitions of the Eu3+ and Tb3+ ions. It depends on the composition and structure of the composites, excitation wavelength, and other factors. The mutual effects of the ZnS and the Eu3+ and Tb3+ ions show up as changes in the position and relative intensity of luminescence bands in the spectra of the composites.

Sobre autores

V. Smagin

Altai State University

Autor responsável pela correspondência
Email: smaginV@yandex.ru
Rússia, pr. Lenina 61, Barnaul, 656049

N. Eremina

National Research Tomsk State University

Email: smaginV@yandex.ru
Rússia, pr. Lenina 36, Tomsk, 634050

M. Leonov

Altai State University

Email: smaginV@yandex.ru
Rússia, pr. Lenina 61, Barnaul, 656049

Arquivos suplementares

Arquivos suplementares
Ação
1. JATS XML

Declaração de direitos autorais © Pleiades Publishing, Ltd., 2018