Excited state dynamics and energy transfer rates in Sr3Tb0.90Eu0.10(PO4)3

被引：23

作者：

Bettinelli, Marco ^{[1
,2
]}

Piccinelli, Fablo ^{[1
,2
]}

Speghini, Adolfo ^{[1
,2
]}

Ueda, Jumpei ^{[3
]}

Tanabe, Setsuhisa ^{[3
]}

机构：

[1] Univ Verona, Dept Biotechnol, Lab Solid State Chem, I-37134 Verona, Italy

[2] UdR Verona, INSTM, I-37134 Verona, Italy

[3] Kyoto Univ, Grad Sch Human & Environm Studies, Sakyo Ku, Kyoto 6068501, Japan

来源：

JOURNAL OF LUMINESCENCE | 2012年 / 132卷 / 01期

关键词：

Energy transfer; Eu3+; Tb3+; Multipolar interactions; VUV SENSITIZATION; EU3+ EMISSION; TB3+; LUMINESCENCE; EFFICIENT; CRYSTALS;

D O I：

10.1016/j.jlumin.2011.07.018

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The emission spectrum of neat Sr3Tb(PO4)(3) upon excitation at 337 nm in the levels above D-5(3) is dominated by D-5(4) emission and no significant emission from D-5(3) is observed due to efficient cross relaxation involving the Tb3+ levels. On the other hand, the emission spectrum of the same host containing 10 mol% Eu3+ upon excitation at the same wavelength (in the Tb3+ levels) is dominated by strong emission bands from the D-5(0) level of Eu3+. This clearly indicates that Tb3+ -> Eu3+ energy transfer is present. The excitation spectrum of the Eu3+ D-5(0) emission is dominated by Tb3+ bands extending in the UV region. The presence of 10 mol% Eu3+ in Sr3Tb(PO4)(3) very strongly shortens the D-5(4) decay time. The decay curve is not far from exponential, indicating that the energy transfer to Eu3+ is accompanied by fast energy migration. The transfer regimes are identified and the donor-donor and donor-acceptor transfer microparameters are quantified under the assumption of electric dipole-electric dipole interactions. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：27 / 29

页数：3

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