Luminescence properties of Pr3+ in titanates and vanadates:: Towards a criterion to predict 3P0 emission quenching

被引：80

作者：

Boutinaud, P ^{[1
]}

Mahiou, R

Cavalli, E

Bettinelli, M

机构：

[1] Univ Clermont Ferrand, UMR CNRS 6002, Lab Mat Inorgan, F-63177 Aubiere, France

[2] ENSCCF, Ensemble Sci Cezeaux, F-63177 Aubiere, France

[3] Univ Parma, INFM, I-43100 Parma, Italy

[4] Univ Parma, Dipartimento Chim Gen & Inorgan, I-43100 Parma, Italy

[5] Univ Verona, Dipartimento Sci & Tecnol, I-37134 Verona, Italy

[6] INSTM, UdR Verona, I-37134 Verona, Italy

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 418卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2005.10.120

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Luminescence spectra of Pr3+ in 15 titanate and vanadate lattices have been measured under LW excitation. They are characterized by a dominant red luminescence assigned to transitions from the D-1(2) level to the ground state. The quenching of the otherwise prominent blue luminescence from P-3(0) state is ascribed to a relaxation pathway involving a low-lying Pr3+-Mn+ (Mn+ = Ti4+ or V5+) intervalence charge transfer (IVCT) state. Complete quenching of the P-3(0) emission takes place when the IVCT bands are located in the 2650028 000 cm(-1) range and the shortest Pr3+-Mn+ distances are in the 3.15-3.30 angstrom range. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：185 / 188

页数：4

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