Colour tuneability and white light generation in Yb3+-Ho3+-Tm3+ co-doped SiO2-LaF3 nano-glass-ceramics prepared by sol-gel method

被引：23

作者：

Yanes, A. C. ^{[2
]}

Velazquez, J. J. ^{[1
]}

del-Castillo, J. ^{[2
]}

Mendez-Ramos, J. ^{[1
]}

Rodriguez, V. D. ^{[1
]}

机构：

[1] Univ La Laguna, Dpto Fis Fundamental & Expt, E-38206 Tenerife, Spain

[2] Univ La Laguna, Dpto Fis Basica, E-38206 Tenerife, Spain

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2009年 / 51卷 / 01期

关键词：

Rare-earth dopant; Glass-ceramics; Colour tuneable up-conversion phosphor; UP-CONVERSION LUMINESCENCE; RARE-EARTH IONS; ENERGY-TRANSFER; SNO2; NANOCRYSTALS; TELLURITE GLASSES; GREEN; BLUE; EU3+; RED; FLUORESCENCE;

D O I：

10.1007/s10971-009-1924-3

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：

Nanostructured transparent glass-ceramics with composition of 95SiO(2)-5LaF(3) co-doped with 0.3Yb(3+), 0.1Ho(3+) and 0.1Tm(3+) (mol%) were synthesized by thermal treatment of precursor sol-gel derived glasses. X-ray diffraction and transmission electron microscopy analysis point out the precipitation of hexagonal LaF3 nanocrystals with diameter ranging from 11 to 20 nm in these nano-glass-ceramics. White light generation by means of efficient blue, green and red up-conversion luminescence under infrared excitation at 980 nm was observed and involved mechanisms were analyzed. Colour tuneability is achieved by varying the up-conversion emission ratios as a function of pump power.

引用

页码：4 / 9

页数：6

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