Do Eu dopants prefer the precipitated LaF3 nanocrystals in glass ceramics?

被引：14

作者：

Jiang, Nan ^{[1
]}

Zhou, Shifeng ^{[2
]}

Su, Dong ^{[3
]}

Qiu, Jianrong ^{[2
]}

机构：

[1] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[2] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

[3] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA

来源：

PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2012年 / 6卷 / 12期

关键词：

rare-earth; fluorides; nanocrystals; silicate glasses; LaF3; doping; UP-CONVERSION LUMINESCENCE; PHASE; LASER; ER3+; YB3+;

D O I：

10.1002/pssr.201206476

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Previous experimental results, using techniques associated with transmission electron microscopy (TEM), suggested that rare-earth dopants prefer the precipitated fluoride nanocrystals to the glass matrix. By contrast, this work shows that contradicting results can be obtained under different experimental conditions. In the silicate glass containing LaF3 nanocrystals, the Eu dopants distribute indistinguishably in the precipitated LaF3 and the silicate glass matrix. However, electron beam exposure during the measurement can relocate Eu, leading to the false conclusion that apparently Eu prefers the precipitated LaF3 nanoparticles to the glass matrix. Fortunately, the artefact can be avoided by shortening the exposure time. ((c) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

引用

页码：487 / 489

页数：3

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