Optical characterization of infrared emitting rare-earth-doped fluoride nanocrystals and their transparent nanocomposites

被引：146

作者：

Kumar, G. A.

Chen, C. W.

Ballato, J.

Riman, R. E.

机构：

[1] Rutgers State Univ, Dept Mat Sci & Engn, Piscataway, NJ 08854 USA

[2] Clemson Univ, Sch Mat Sci & Engn, Clemson, SC 29634 USA

[3] Clemson Univ, Ctr Opt Mat Sci & Engn Technol, Clemson, SC 29634 USA

来源：

CHEMISTRY OF MATERIALS | 2007年 / 19卷 / 06期

关键词：

D O I：

10.1021/cm051567n

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：

Nanocrystalline LaF3:Nd and CaF2:Er with rare-earth concentrations ranging from 0.5 to 16.7 mol % and dispersible particle sizes less than 100 nm were synthesized by solvothermal synthesis. Optical absorption, emission, and quantum efficiency were measured for the nanocrystals. Dopant levels of 0.5 mol % rare earth exhibited the best emission characteristics, with maximum quantum efficiencies of 95 and 51% for LaF3:Nd and CaF2:Er, respectively. The nanopowders were suspended in PFCB (6F variant) polymer-in-toluene solutions to make transparent suspensions that could be cast to make transparent nanocomposites. Scattering analysis indicates that the excellent transmission can be attributed to nanocrystals dispersed in the composite at length scales less than 100 nm.

引用

页码：1523 / 1528

页数：6

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