Tunable white light and energy transfer of Eu2+-Tb3+-Eu3+ tri-activated glasses synthesized in air

被引：22
作者：
Guo, Hai [1 ,2 ]
Teng, Liming [2 ]
Wei, Rongfei [2 ]
机构：
[1] Minjiang Univ, Ocean Coll, Fujian Engn Res Ctr New Chinese Lacquer Mat, Fuzhou 350108, Fujian, Peoples R China
[2] Zhejiang Normal Univ, Dept Phys, Jinhua, Zhejiang, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 11期
基金：
中国国家自然科学基金;
关键词：
energy transfer; glass; optical materials; properties; photoluminescence; rare earths; ALUMINOBOROSILICATE GLASSES; BORATE GLASSES; LUMINESCENT PROPERTIES; OPTICAL-PROPERTIES; EMITTING PHOSPHOR; SILICATE GLASS; EMISSION; EU2+; EU3+; REDUCTION;
D O I：
10.1111/jace.16532
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An ever increasing demand for white light-emitting diodes (W-LEDs) results in the gradual growth of research on functionalized luminescent glasses. In this paper, single-composition tunable white-emitting Eu2+-Tb3+-Eu3+ tri-activated glasses were synthesized by melt quenching method without additional reducing atmosphere. The coexistence of Eu2+ and Eu3+ was confirmed by ultraviolet-visible transmission spectra, photoluminescent spectra, fluorescence decay curves, and X-ray photoelectron spectroscopy. Tb3+ can act as bridge to connect Eu2+-Eu3+ luminescent centers by energy transfer. Tone-tunable white light can be achieved by coupling the emission centered at 412, 541, and 612 nm contributed from Eu2+, Tb3+, and Eu3+, respectively. By adjusting the relative content of Eu2+/Tb3+/Eu3+, ideal chromaticity coordinates of (0.33, 0.33) can be achieved under excitation of ultraviolet light. High thermal stability and tiny chromaticity shift were exhibited in samples. These results suggest that Eu2+-Tb3+-Eu3+ tri-activated glasses have great potential application in ultraviolet-driven W-LEDs.
引用
收藏
页码：6777 / 6786
页数：10
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