Novel rare earth ions-doped oxyfluoride nano-composite with efficient upconversion white-light emission

被引：87

作者：

Chen, Daqin ^{[1
]}

Wang, Yuansheng ^{[1
]}

Yu, Yunlong ^{[1
]}

Huang, Ping ^{[1
]}

Weng, Fangyi ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2008年 / 181卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Nano-composite; Crystallization; Optical materials; Luminescence;

D O I：

10.1016/j.jssc.2008.07.003

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Transparent SiO2-Al2O3-NaF-YF3 bulk nano-composites triply doped with Ho3+, Tm3+ and Yb3+ were fabricated by melt-quenching and Subsequent hearing. X-ray diffraction and transmission electron microscopy measurements demonstrated the homogeneous precipitation of the beta-YF3 crystals with mean size of 20 nm among the glass matrix,and rare earth ions were found to partition into these nanocrystals. Under single 976 not laser excitation, intense red, green and blue upconversion emissions were simultaneously observed owing to the successive energy transfer from Yb3+ to Ho3+ or Tm3+. Various colors of luminescence, including bright perfect white light, can be easily tuned by adjusting the concentrations of the rare earth ions in the material. The overall energy efficiency of the white-light upconversion was estimated to be about 0.2%. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：2763 / 2767

页数：5

共 30 条

[1] Red-green-blue upconversion emission and energy-transfer between Tm3+ and Er3+ ions in tellurite glasses excited at 1.064 μm [J].