LUMINESCENCE OF EU3+-DOPED LANTHANUM TITANATE (LA2TIO5), A SYSTEM WITH ONE-DIMENSIONAL ENERGY MIGRATION

被引：9

作者：

ALARCON, J ^{[1
]}

BLASSE, G ^{[1
]}

机构：

[1] UNIV UTRECHT, DEBYE RES INST, 3508 TA UTRECHT, NETHERLANDS

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1992年 / 53卷 / 05期

关键词：

LUMINESCENCE; LA2TIO5; EU3+;

D O I：

10.1016/0022-3697(92)90206-S

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The titanate and Eu3+ luminescence of a composition La2TiO5-Eu are reported as a function of temperature. At 4.2 K the quantum efficiency is very high, because the titanate excitation energy is localized. At 300 K there is delocalization and quenching centres are easily reached, so that the quantum efficiency becomes low. This is discussed in terms of the crystal structure, as are the peculiarities of the Eu3+ spectra.

引用

页码：677 / 680

页数：4

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