Luminescent characteristics of Tm^(3+)/Tb^(3+)/Eu^(3+) tri-doped Na_(5)Y_(9)F_(32) single crystals for white emission with high thermal stability

方立志; 周雄; 赵志伟; 郑标; 夏海平; 王军; 宋宏伟; 陈宝玖

首页> 中文期刊> 《中国物理：英文版》 >Luminescent characteristics of Tm^(3+)/Tb^(3+)/Eu^(3+) tri-doped Na_(5)Y_(9)F_(32) single crystals for white emission with high thermal stability

Luminescent characteristics of Tm^(3+)/Tb^(3+)/Eu^(3+) tri-doped Na_(5)Y_(9)F_(32) single crystals for white emission with high thermal stability

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By using an improved Bridgman method,0.3 mol%Tm^(3+)/0.6 mol%Tb^(3+)/y mol%Eu^(3+)(y=0,0.4,0.6,0.8)doped Na_(5)Y_(9)F_(32)single crystals were prepared.The x-ray diffraction,excitation spectra,emission spectra and fluorescence decay curves were used to explore the crystal structure and optical performance of the obtained samples.When excited by 362 nm light,the cool white emission was realized by Na_(5)Y_(9)F_(32)single crystal triply-doped with 0.3 mol%Tm^(3+)/0.6 mol%Tb^(3+)/0.8 mol%Eu^(3+),in which the Commission Internationale de l’Eclairage(CIE)chromaticity coordinate was(0.2995,0.3298)and the correlated color temperature(CCT)was 6586 K.The integrated normalized emission intensity of the tridoped single crystal at 448 K could keep 62%of that at 298 K.The internal quantum yield(QY)was calculated to be~15.16%by integrating spheres.These results suggested that the single crystals tri-doped with Tm^(3+),Tb^(3+)and Eu^(3+)ions have a promising potential application for white light-emitting diodes(w-LEDs).

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来源
《中国物理：英文版》 |2022年第12期|544-549|共6页
作者
方立志; 周雄; 赵志伟; 郑标; 夏海平; 王军; 宋宏伟; 陈宝玖;
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作者单位

Key Laboratory of Photo-electronic Materials;

Ningbo University;

Ningbo 315211;

China;

Taizhou Special Equipment Inspection and Research Institute;

Taizhou 318000;

China;

Fujian Provincial Key Laboratory of Functional Marine Sensing Materials;

Center for Advanced Marine Sensing Materials and Smart Sensors;

Minjiang University;

Fuzhou 350108;

China;

State Key Laboratory on Integrated Optoelectronics;

College of Electronic Science and Engineering and College of Physics;

Jilin University;

Changchun 130012;

China;

Department of Physics;

Dalian Maritime University;

Dalian 116026;

China;

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正文语种 chi
中图分类晶体的光学性质;
关键词
Tm^(3+)/Tb^(3+)/Eu^(3+)triply-doped Na_(5)Y_(9)F_(32); white light emission; energy transfer process; thermal stability;

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Luminescent characteristics of Tm^(3+)/Tb^(3+)/Eu^(3+) tri-doped Na_(5)Y_(9)F_(32) single crystals for white emission with high thermal stability

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