Optical spectroscopy and confocal fluorescence imaging of upconverting Er3+-doped CaF2 nanocrystals

被引：34

作者：

Kumar, G. A. ^{[1
]}

Chen, C. W. ^{[1
]}

Riman, R. E. ^{[1
]}

机构：

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

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 09期

关键词：

D O I：

10.1063/1.2392284

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Up-conversion emission and confocal fluorescence imaging of Er3+-doped CaF2 nanocrystals were investigated using infrared excitation. At Er3+ concentrations less than 2.8 mol %, green emission was dominant while red prevailed at higher concentrations. The simultaneous green and red emission and change in relative intensities is explained with a mechanism utilizing concepts of TPA, ESA, ET, and CR processes. (c) 2007 American Institute of Physics.

引用

页数：3

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