Polyol-mediated synthesis and luminescence of lanthanide-doped NaYF4 nanocrystal upconversion phosphors

被引：50

作者：

Wei, Yang ^{[1
]}

Lu, Fengqi ^{[1
]}

Zhang, Xinrong ^{[1
]}

Chen, Depu ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 455卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

nanostructured materials; chemical synthesis; luminescence;

D O I：

10.1016/j.jallcom.2007.01.107

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyol method has been successfully used to prepare Yb3+/Er3+ and Yb3+/Tm3+ codoped NaYF4 nanocrystal upconversion phosphors. Three kinds of polyols (glycol, diethylene glycol and glycerol) were used not only as reaction medium but also as size-controlled capping ligands to limit particle growth and stabilize the particles. Nanoparticles crystallized in pure cubic phase were obtained via the polyol method, then cubicto-hexagonal phase transition of the nanoparticles occurred during the follow-up solvothermal treatment. Factors that had impact on the structure and morphology of the nanoparticles and affected the fluorescent performance of the nanocrystal upconversion phosphors were discussed. The obtained Yb3+/Er3+ and Yb3+/Tm3+ codoped NaYF4 nanoparticles could be well dispersed in water, and they could emit multicolor upconversion fluorescence under 980 nm laser excitation; these features were favorable for the multiple labeling in biological detection. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：376 / 384

页数：9