Sr8MSm1-хEuх(PO4)7 phosphors derived by different synthesis routes: solid state, sol-gel and hydrothermal, the comparison of properties

Deyneko, D.V.; Nikiforov, I.V.; Spassky, D.A.; Berdonosov, P.S.; Dzhevakov, P.B.; Lazoryak, B.I.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 27 октября 2021 г.

Авторы: Deyneko Dina V., Nikiforov Ivan V., Spassky Dmitry A., Berdonosov Peter S., Dzhevakov Pavel B., Lazoryak Bogdan I.
Журнал: Journal of Alloys and Compounds
Год издания: 2021
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 161340
DOI: 10.1016/j.jallcom.2021.161340
Аннотация: A series of new Sr-based phosphors Sr8M²⁺Sm1-х(PO4)7:xEu³⁺, M = Mg²⁺, Zn²⁺ with β-Ca3(PO4)2-type structure were synthesized and studied. The Sr8MgEu(PO4)7 was obtained by three types of synthetic routs: high temperature solid-state, hydrothermal and sol-gel methods. The influence of synthesis routes and annealing conditions on luminescent properties was studied and analyzed taking into account the data on average crystallite size and grain size determination. It was shown that the synthesis method has a defining role on the phosphor’s properties. The solid-state route gives the best powders crystallinity and the highest intensity of emission. The samples were characterized by strongly emission in visible region at 615 nm originating from ⁵D0 → ⁷F2 transition of Eu³⁺ and 600 nm originating from the ⁵G5/2 → ⁴H7/2 transition of Sm³⁺. Also, it was revealed that Zn-substituted samples exhibits higher intensity than Mg-containing ones due to larger particle size and lower scattering of light and higher light absorption. Photoluminescence decay curves were measured and the dependence of decay times on activator concentrations was revealed. The CIE chromaticity coordinates were close to red standard. The prototypes of LED were characterized by strong emission with warm correlated color temperature. The investigated samples can be used as a potential commercial phosphor for solid-state lighting application.
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Sr8MSm1-хEuх(PO4)7 phosphors derived by different synthesis routes: solid state, sol-gel and hydrothermal, the comparison of propertiesстатья

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