Solid Solution Formation and Ce3+ Luminescence in Silicate Garnets

被引：30

作者：

Kishore, M. Satya ^{[1
]}

Kumar, N. Prasanth ^{[1
]}

Chandran, R. Gopi ^{[1
]}

Setlur, A. A. ^{[2
]}

机构：

[1] GE Global Res, John F Welch Technol Ctr, Bangalore 560066, Karnataka, India

[2] GE Global Res, New York, NY 12309 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2010年 / 13卷 / 06期

关键词：

EFFECTIVE IONIC RADII; CRYSTAL-CHEMISTRY; CA3SC2SI3O12-CE3+ PHOSPHOR; PHOTOLUMINESCENCE; ENERGY;

D O I：

10.1149/1.3380854

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this article, we discuss the crystal chemistry and luminescence properties of Ce3+ activated silicate garnets. Our results indicate that the two previously reported end members of this family, Lu2CaMg2Si3O12 and Ca3Sc2Si3O12, form a complete solid solution, and Sc3+ primarily substitutes for Mg2+ in the octahedral sites with charge compensation by Ca2+ substitution in the dodecahedral sites. Within this solid solution, there is a continuous shift in the lowest energy Ce3+ 4f -> 5d excitation band and the Ce3+ 5d -> 4f emission band toward higher energy as the composition is varied between Lu2CaMg2Si3O12 and Ca3Sc2Si3O12. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3380854] All rights reserved.

引用

页码：J77 / J80

页数：4

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