Colloidal LaF3:Yb,Er, LaF3:Yb,Ho and LaF3:Yb,Tm nanocrystals with multicolor upconversion fluorescence

被引：240

作者：

Yi, GS ^{[1
]}

Chow, GM

机构：

[1] Natl Univ Singapore, Singapore Massachusetts Inst Technol, Singapore 119260, Singapore

[2] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 119260, Singapore

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2005年 / 15卷 / 41期

关键词：

D O I：

10.1039/b508240d

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：

The IR-to-visible upconversion fluorescent nanocrystals, Yb-Er, Yb-Ho and Yb-Tm co-doped LaF3 were chemically synthesized and investigated. The ligand-capped nanocrystals were easily dispersed in organic solutions and subsequently formed a transparent colloidal solution. Under 980 nm IR excitation, green, red and blue emission bands were observed from these colloidal solutions, respectively. Compared with the recently reported colloidal NaYF4:Yb,Er nanocrystals, our nanocrystals produced a fluorescence output which was 5 times higher. These nanocrystals have potential applications as bio- probes and displays.

引用

页码：4460 / 4464

页数：5

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