The application and a substitution defect model for Eu3+ → Eu2+ reduction in non-reducing atmospheres in borates containing BO4 anion groups

被引：126

作者：

Pei, ZW ^{[1
]}

Zeng, QH ^{[1
]}

Su, QA ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2000年 / 61卷 / 01期

基金：

中国国家自然科学基金;

关键词：

oxides; defects; luminescence; phosphors;

D O I：

10.1016/S0022-3697(99)00237-1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The variations of emission intensities of SrB4O7:Eu2+ and Sr2B5O9Cl:Eu2+ prepared in different atmospheres are discussed in view of the structure of host compounds. A model of substitution defects is proposed to explain the abnormal reduction of Eu3+ --> Eu2+ in non-reducing atmospheres of N-2, air and O-2. Experiment results show that SrB4O7:Eu2+ phosphor sample prepared in N-2 atmosphere has an emission intensity of 94% as high as that of the sample prepared in H-2 gas. This implies that the reduction of Eu2+ --> Eu2+ in non-reducing atmospheres could be potentially used in preparing phosphors, such as SrB4O7:Eu2+. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：9 / 12

页数：4

共 9 条

[1] LUMINESCENCE PROPERTIES OF EU(II)-BORATES AND EU2+-ACTIVATED SR-BORATES [J].

MACHIDA, K ;

ADACHI, G ;

SHIOKAWA, J .

JOURNAL OF LUMINESCENCE, 1979, 21 (01) :101-110

[2] THE CRYSTAL-STRUCTURE AND LUMINESCENCE PROPERTIES OF EUROPIUM(II) HALOBORATES [J].

MACHIDA, K ;

ADACHI, G ;

MORIWAKI, Y ;

SHIOKAWA, J .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1981, 54 (04) :1048-1051

[3] STRUCTURE OF EUROPIUM(II) TETRABORATE [J].

MACHIDA, KI ;

ADACHI, GY ;

SHIOKAWA, J .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1980, 36 (SEP) :2008-2011

[4]

McCarthy G. J., 1970, J. Less-Common Metals, V22, P409

[5] THE VALENCE CHANGE FROM RE3+ TO RE2+ (RE-EQUIVALENT-TO-EU, SM, YB) IN SRB4O7-RE PREPARED IN AIR AND THE SPECTRAL PROPERTIES OF RE2+ [J].

PEI, ZW ;

SU, Q ;

ZHANG, JY .

JOURNAL OF ALLOYS AND COMPOUNDS, 1993, 198 (1-2) :51-53

[6]

PEI ZW, 1996, CHIN J LUMIN S, V17, P114

[7]

PETERS TE, 1970, J INORG NUCL CHEM, V32, P1083

[8] THE LUMINESCENCE OF EUROPIUM IN STRONTIUM BORATES [J].

SCHIPPER, WJ ;

VANDERVOORT, D ;

VANDENBERG, P ;

VROON, ZAEP ;

BLASSE, G .

MATERIALS CHEMISTRY AND PHYSICS, 1993, 33 (3-4) :311-317

[9] The reduction of Eu3+ in SrB6O10 prepared in air and the luminescence of SrB6O10:Eu [J].

Zeng, QH ;

Pei, ZW ;

Wang, SB ;

Su, Q .

JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 275 :238-241

← 1 →