Near-infrared (NIR) to red and green up-conversion emission from silica sol-gel thin films made with La0.45Yb0.50Er0.05F3 nanoparticles, hetero-looping-enhanced energy transfer (Hetero-LEET):: A new up-conversion process

被引：196

作者：

Sivakumar, Sri

van Veggel, Frank C. J. M.

May, P. Stanley

机构：

[1] Univ Victoria, Dept Chem, Victoria, BC V8W 3V6, Canada

[2] Univ S Dakota, Dept Chem, Vermillion, SD 57069 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 03期

关键词：

D O I：

10.1021/JA065378x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bright green and red luminescence has been generated with a 980 nm diode laser from silica sol-gel thin films made with La0.45Yb0.50Er0.05F3 nanoparticles through a newly described hetero-looping-enhanced energy-transfer (hetero-LEET) up-conversion process, which exhibits a power dependence similar to that of a photon avalanche (PA). The hetero-LEET mechanism is potentially more efficient than PA, ground-state absorption/excited-state absorption (GSA/ESA), and energy-transfer (ETU) mechanisms because it combines resonant ground-state absorption with a looping or feedback process.

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页码：620 / 625

页数：6

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