Nanocrystalline lanthanide tetraphosphates: Energy transfer processes in samples co-doped with Pr3+/Yb3+ and Tm3+/Yb3+

被引：7

作者：

Lukowiak, Anna ^{[1
]}

Stefanski, Mariusz ^{[1
]}

Ferrari, Maurizio ^{[2
]}

Strek, Wieslaw ^{[1
]}

机构：

[1] PAS, Inst Low Temp & Struct Res, 2 Okolna St, PL-50950 Wroclaw, Poland

[2] IFN CNR CSMFO Lab, Via Alla Cascata 56-C Povo, I-38123 Trento, Italy

来源：

OPTICAL MATERIALS | 2017年 / 74卷

关键词：

Tetraphosphates; Rare earth ions; Photoluminescence; Downconversion; Upconversion; UP-CONVERSION LUMINESCENCE; CRYSTAL-STRUCTURE; GLASS-CERAMICS; EMISSION; YB3+; NANOPARTICLES; FLUORESCENCE; IONS; PR3+; ENHANCEMENT;

D O I：

10.1016/j.optmat.2017.03.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoluminescent properties of nanocrystalline powders of the LiLa(PO3)(4) system co-doped with Pr3+/Yb3+ or Tm3+/Yb3+ ions were reported. The powders were synthesized by precipitation method and annealed at 450 degrees C. Two series of the samples were prepared with 1 mol% of praseodymium or thulium ions and with various ytterbium content (from 2% up to 16%). Both the up- and downconversion energy transfers were studied, in particular, the spectra and kinetics of photoluminescence under blue (into Pr3+ or Tm3+ ions, respectively) and NIR (into Yb3+ ions) excitations. The possible mechanisms of energy migration were discussed. Higher ytterbium concentration resulted in higher energy transfer efficiencies for both tetraphosphate systems. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：159 / 165

页数：7

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