Luminescence Properties of Solid Solutions of Borates Doped with Rare-Earth Ions

Levushkina, V.S.; Mikhailin, V.V.; Spassky, D.A.; Zadneprovski, B.I.; Tret’yakova, M.S.

Авторы: Levushkina V.S., Mikhailin V.V., Spassky D.A., Zadneprovski B.I., Tret’yakova M.S.
Журнал: Physics of the Solid State
Том: 56
Номер: 11
Год издания: 2014
Издательство: Pleiades Publishing, Ltd
Местоположение издательства: Road Town, United Kingdom
Первая страница: 2247
Последняя страница: 2258
DOI: 10.1134/S1063783414110171
Аннотация: The structural and luminescence properties of LuxY1 ⎯ xBO3 solid solutions doped with Ce3+ or Eu+3 have been investigated. It has been found that the solid solutions crystallize in the vaterite phase with a lutetium concentration x < 0.5. For a higher lutetium concentration x, the solid solutions contain an additional calcite phase with a content less than 5 wt %. The luminescence spectra are characterized by intensive impurity emission under excitation with the synchrotron radiation in the X-ray and ultraviolet spectral ranges. It has been shown that, as the lutetium concentration x in the LuxY1 ⎯ xBO3 : Ce3+ solid solutions increases, the emission intensity smoothly decreases, which is associated with a gradual shift of the Ce3+ 5d(1)level toward the bottom of the conduction band, as well as with a decrease in the band gap. It has been established that, in the LuxY1 ⎯ xBO3 : Eu3+ solid solutions with intermediate concentrations x, the efficiency of energy transfer to luminescence centers increases. This effect is explained by the limited separation of electrons and holes in the solid solutions. It has been demonstrated that the calcite phase adversely affects the luminescence properties of the solid solutions.
Добавил в систему: Спасский Дмитрий Андреевич

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Luminescence Properties of Solid Solutions of Borates Doped with Rare-Earth Ionsстатья

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