Ba2Gd2 – xSmxGe4O13: Luminescence Properties, Prospects for Non-Contact Temperature Sensing Applications and Light-Emitting Diodes

A. V. Chvanova; Чванова А. В.; O. A. Lipina; Липина О. А.; A. Yu. Chufarov; Чуфаров А. Ю.; A. P. Tyutyunnik; Тютюнник А. П.; Ya. V. Baklanova; Бакланова Я. В.; L. L. Surat; Сурат Л. Л.; V. G. Zubkov; Зубков В. Г.

doi:10.31857/S0044457X22601353

Ba2Gd2 – xSmxGe4O13: Luminescence Properties, Prospects for Non-Contact Temperature Sensing Applications and Light-Emitting Diodes

Autores: Chvanova A.¹, Lipina O.¹, Chufarov A.¹, Tyutyunnik A.¹, Baklanova Y.¹, Surat L.¹, Zubkov V.¹
Afiliações:
1. Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences
Edição: Volume 68, Nº 3 (2023)
Páginas: 383-392
Seção: НЕОРГАНИЧЕСКИЕ МАТЕРИАЛЫ И НАНОМАТЕРИАЛЫ
URL: https://journals.rcsi.science/0044-457X/article/view/136343
DOI: https://doi.org/10.31857/S0044457X22601353
EDN: https://elibrary.ru/JCHJRU
ID: 136343

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Resumo

Tetragermanates Ba2Gd2 – xSmxGe4O13 (x = 0.025–0.8) have been synthesized by the solid-phase method. Solid solutions crystallize in the monoclinic crystal system (space group С2/с, Z = 4) and are members of a small family of inorganic compounds containing [Ge4O13]10– anions. The photoluminescence properties of germanates upon excitation by radiation with λex = 275 nm have been studied. The spectra of the compounds show a broad band with a maximum at 313 nm and a set of lines in the range of 525–730 nm, corresponding to intraconfigurational 4f–4f transitions in Gd3+ and Sm3+ ions. It has been found that germanate Ba2Gd1.95Sm0.05Ge4O13 has the maximum luminescence intensity. For this sample, the color characteristics and the temperature dependences of the intensity ratios of the main luminescence bands upon heating to 498 K have been studied. It has been concluded that Ba2Gd1.95Sm0.05Ge4O13 can be used as a material for non-contact temperature sensing and light emitting diodes.

Palavras-chave

luminescence, germanate, samarium

Bibliografia

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