Quenching mechanism of Er3+ emissions in Er3+- and Er3+/Yb3+-doped SrAl12O19 nanophosphors

被引：7

作者：

Yan Wuzhao ^{[1
]}

Chen Yonghu ^{[1
]}

Yin Min ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2011年 / 29卷 / 03期

基金：

中国国家自然科学基金;

关键词：

erbium; ytterbium; gadolinium; SrAl12O19; near infrared; nanoscaled phosphor; rare earths; YTTRIUM ALUMINUM BORATE; SOL-GEL POWDER; ENERGY-TRANSFER; UP-CONVERSION; LUMINESCENCE; YB3+; PHOTOLUMINESCENCE; SPECTROSCOPY; ENVIRONMENT; GLASSES;

D O I：

10.1016/S1002-0721(10)60431-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Nanoscaled SrAl12O19:Er3+ and SrAl12O19:Yb3+, Er3+ phosphors were synthesized by a combustion method. The emission intensities of every sample were compared by a new method with the emission of codoped Gd3+ ions as a reference. Compared with their bulk material prepared by the solid-state reaction method, a higher Er3+ quenching concentration, as high as 20%, was observed in the nanoscaled phosphors for both visible (VIS) and near infrared (NIR) emissions. The higher quenching concentration in both VIS and NIR regions for nanoscaled samples are related to the structure characteristics of the nano particles. The influence of the introduction of Yb3+ ions on the emission spectra intensity was also investigated and discussed.

引用

页码：202 / 206

页数：5

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