Peculiarities of the Ho3+ →Yb3+ energy transfer in CaSc2O4:Ho:Yb

被引：14

作者：

Georgescu, Serban ^{[1
]}

Stefan, Angela ^{[1
,2
]}

Voiculescu, Ana-Maria ^{[1
]}

Toma, Octavian ^{[1
]}

Matei, Cristina ^{[1
,2
]}

Birjega, Ruxandra ^{[1
]}

机构：

[1] Natl Inst Laser Plasma & Radiat Phys, Magurele Ilfov 077125, Romania

[2] Univ Bucharest, Fac Phys, Magurele Ilfov 077125, Romania

来源：

JOURNAL OF LUMINESCENCE | 2014年 / 154卷

关键词：

CaSc2O4; Ho3+; Yb3+; Energy transfer; Downconversion; SPECTROSCOPIC PROPERTIES; CALCIUM SCANDATE; UP-CONVERSION; LUMINESCENCE; PHOSPHOR; OXIDES;

D O I：

10.1016/j.jlumin.2014.04.021

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We study the effect of the energy transfer processes between Ho3+ and Yb3+ in CaSc2O4 on the emission properties in visible and IR of Ho3+ and Yb3+. The decays of the Ho3+ levels (S-5(2), F-5(4)) and I-5(6) for various Yb3+ concentrations are measured. We show that, for pumping in F-5(3) (at 488 nm), the total number of photons emitted by Ho3+ and Yb3+ in the wavelength domain 500-1600 nm is augmented by the presence of Yb3+. We estimate a 30% increase of the overall quantum efficiency of CaSc2O4:Ho:Yb, due to the presence of Yb3+. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：142 / 147

页数：6

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