Luminescence,Concentration Quenching and Thermal Stability of White Emitting Phosphor Ba2Ca(BO3)2:Dy3+

被引：1

作者：

SONG Huiling ^{[1
]}

ZHOU Fen ^{[1
]}

CAO Heying ^{[1
]}

GUO Mingchao ^{[1
]}

ZHAO Jiawei ^{[1
]}

WANG Zhijun ^{[1
]}

LIU Haiyan ^{[2
]}

GAO Shaojie ^{[3
]}

LI Panlai ^{[1
]}

机构：

[1] College of Physics Science & Technology,Hebei University

[2] Industrial & Commercial college,Hebei University

[3] Department of Foreign Language Teaching and Research,Hebei University

来源：

Journal of the Chinese Ceramic Society | 2015年 / 2卷 / 02期

关键词：

luminescence; concentration quenching; thermal stability; Ba2Ca(BO3)2:Dy3+;

D O I：

暂无

中图分类号：

TQ422 [光化学物质];

学科分类号：

0817 ;

摘要：

A white emitting phosphor Ba2Ca(BO3)2:Dy3+ was synthesized via a high temperature solid state reaction at 1000℃ for 5 h. The luminescence, mole fraction quenching and thermal stability of Ba2Ca(BO3)2:Dy3+ were investigated. According to the phase composition analyzed by X-ray powder diffraction, there is no crystalline phase except Ba2Ca(BO3)2 in the sample. Ba2Ca(BO3)2:Dy3+ can produce white emission under 348 nm excitation. The emission intensities of Ba2Ca(BO3)2:Dy3+ are affected by Dy3+ concentration. The concentration quenching effect was analyzed, and the concentration quenching mechanism was verified as dipole-dipole interaction. The critical distance(R c) obtained based on the crystal structure data is 2.911 nm. At 150℃, the emission intensity of Ba2Ca(BO3)2:Dy3+ is 68.0% of the initial value at room temperature. The activation energy for the thermal quenching calculated is 0.202 e V. Moreover, the CIE chromaticity coordinates of Ba2Ca(BO3)2:Dy3+ locate in the white region of(0.319, 0.356).

引用

页码：59 / 64

页数：6

共 9 条

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