UV-to-red relaxation pathways in CaTiO3:Pr3+

被引：192

作者：

Boutinaud, P ^{[1
]}

Pinel, E

Dubois, M

Vink, AP

Mahiou, R

机构：

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

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

[3] Delft Univ Technol, Interfac Reactor Inst, Radiat Technol Grp, NL-2629 JB Delft, Netherlands

来源：

JOURNAL OF LUMINESCENCE | 2005年 / 111卷 / 1-2期

关键词：

CaTiO3 : Pr3+; charge transfer states; EPR; excitons; photoluminescence; relaxation;

D O I：

10.1016/j.jlumin.2004.06.006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The radiationless relaxation pathways leading to the quenching of P-3(0) emission and subsequent atypical single red luminescence from D-1(2) level in CaTiO3:Pr3+ are studied under UV excitation. Self-trapped excitons are shown to participate in the relaxation process and Pr3+ /Ti4+ reversible arrow Pr4+ /Ti3+ charge transfer state (CTS) is proposed as the final relaxation channel to the emitting D-1(2) level. This mechanism is supported by EPR investigations showing an increase of paramagnetic [Pr4+Ti3+O3](+) clusters upon optical excitation in the CTS. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：69 / 80

页数：12

共 28 条

[1]

ABRAGAM A, 1970, ELECTRON PARAMAGNETI, pCH5

[2] LUMINESCENCE OF EU3+-DOPED LANTHANUM TITANATE (LA2TIO5), A SYSTEM WITH ONE-DIMENSIONAL ENERGY MIGRATION [J].

ALARCON, J ;

BLASSE, G .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1992, 53 (05) :677-680

[3] STUDY BY NEUTRON-DIFFRACTION OF HIGH-TEMPERATURE STRUCTURES OF LA2O3 AND ND2O3 [J].

ALDEBERT, P ;

TRAVERSE, JP .

MATERIALS RESEARCH BULLETIN, 1979, 14 (03) :303-323

[4] STABILIZATION OF TI3+ IN REDUCED (PB,LA)(TI,CU)O-3 CERAMICS - AN EPR STUDY [J].

BIDAULT, O ;

ACTIS, M ;

MAGLIONE, M .

SOLID STATE COMMUNICATIONS, 1995, 95 (12) :845-849

[5] ON THE LUMINESCENCE OF SRTIO3 AND RELATED TITANATES [J].

BLASSE, G .

MATERIALS RESEARCH BULLETIN, 1983, 18 (05) :525-528

[6] OPTICAL PROPERTIES AND BAND STRUCTURE OF SRTIO3 AND BATIO3 [J].

CARDONA, M .

PHYSICAL REVIEW, 1965, 140 (2A) :A651-&

[7] STRONG QUENCHING OF TB3+ EMISSION BY TB-V INTERACTION IN YPO4-YVO4 [J].

DELOSH, RG ;

TIEN, TY ;

GIBBONS, EF ;

ZACMANIDIS, PJ ;

STADLER, HL .

JOURNAL OF CHEMICAL PHYSICS, 1970, 53 (02) :681-+

[8]

Diallo PT, 1997, PHYS STATUS SOLIDI A, V160, P255, DOI 10.1002/1521-396X(199703)160:1<255::AID-PSSA255>3.0.CO

[9]

2-Y

[10] NONRADIATIVE RELAXATION PROCESSES OF THE PR3+ ION IN SOLIDS [J].

DONEGA, CD ;

MEIJERINK, A ;

BLASSE, G .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1995, 56 (05) :673-685

← 1 2 3 →