Pressure-induced luminescence quenching in KY(WO4)2:Pr3+

被引：6

作者：

Mahlik, S. ^{[1
]}

Diaz, E. ^{[2
]}

Boutinaud, P. ^{[3
]}

机构：

[1] Univ Gdansk, Inst Expt Phys, Fac Math Phys & Informat, Wita Stwosza 57, PL-80308 Gdansk, Poland

[2] URV, Fis & Cristallog Mat & Nanomat FiCMA FiCNA, E-43005 Tarragona, Spain

[3] Univ Clermont Auvergne, Sigma Clermont, Inst Chim Clermont Ferrand, BP 10448, F-63000 Clermont Ferrand, France

来源：

OPTICAL MATERIALS | 2017年 / 74卷

关键词：

Double tungstates; Praseodymium; High pressure; Luminescence quenching; INTERVALENCE CHARGE-TRANSFER; EXCITED-STATE DYNAMICS; DOUBLE TUNGSTATE; ENERGY-LEVELS; CRYSTALS; LASER; PR3+; SPECTROSCOPY; RAMAN; IONS;

D O I：

10.1016/j.optmat.2017.04.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The quenching of the red Pr3+ (D-1(2) -> H-3(4)) luminescence in a single crystal of KY(WO4)(2) doped with Pr3+ is investigated at room temperature under high hydrostatic pressure. The quenching is ascribed to a pressure-induced downshift of the Pr3+ -> W6+ metal -to -metal charge transfer (or impurity trapped exciton) state. The concomitant decrease of the D-1(2) -> H-3(4) emission lifetime is reproduced using a phenomenological model. The fitting allows the determination of the pressure -induced shrinkage of the Pr3+-(Y3+)-W6+ distance in the crystal. The value is consistent with the quantity previously determined in CaWO4 by means of X-ray diffraction. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：41 / 45

页数：5

共 30 条

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