Excited-state dynamics and enhanced near-IR emission in Nd3+-structurally activated aluminophosphate glass containing silver and tin

被引：12

作者：

Jimenez, Jose A. ^{[1
]}

Lysenko, Sergiy ^{[2
]}

Sendova, Mariana ^{[3
]}

Zhao, Chunqing ^{[1
]}

机构：

[1] Univ N Florida, Dept Chem, Jacksonville, FL 32224 USA

[2] Univ Puerto Rico, Dept Phys, Mayaguez, PR 00681 USA

[3] New Coll Florida, Opt Spect & Nanomat Lab, Sarasota, FL 34243 USA

来源：

OPTICAL MATERIALS | 2015年 / 46卷

关键词：

Glasses; Energy transfer; Photoluminescence; Rare-earths; LIGHT-EMITTING DEVICES; PHOTOLUMINESCENCE SPECTROSCOPY; METAPHOSPHATE GLASSES; OXYFLUORIDE GLASSES; OPTICAL-PROPERTIES; PHOSPHATE-GLASSES; NEODYMIUM OXIDE; ION-EXCHANGE; DOPED GLASS; AG;

D O I：

10.1016/j.optmat.2015.04.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The excited state dynamics and near-infrared (IR) luminescent properties of Nd3+-doped melt-quenched aluminophosphate glass containing silver and tin have been investigated under pulsed-laser and steady-state excitation at 266 nm. A comparative emission dynamics assessment was carried out concerning Ag and Sn dopants in the glass matrix with and without neodymium. The data indicates an effective non-radiative energy transfer from single Ag+ ions and Sn centers as donors to, neodymium activator ions which ultimately populates the F-4(3/2) emitting state in Nd3+. As a result, the near-IR (1.06 mu m) emission from the 4F3/2 metastable state in Nd3+ is enhanced about an order of magnitude relative to a purely Nd-doped reference. In addition, the F-4(3/2) excited state lifetime becomes significantly longer in the presence of silver and tin. A comparative P-31 nuclear magnetic resonance spectroscopy study suggests glass depolymerization upon neodymium doping. It is proposed that a structural alteration might be linked to the established non-radiative energy transfer. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：88 / 92

页数：5

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