Interconfigurational 5d → 4f luminescence of Ce3+ and Pr3+ in Ca9Lu(PO4)7

被引：27

作者：

Trevisani, M. ^{[1
,2
]}

Ivanovskikh, K. V. ^{[3
]}

Piccinelli, F. ^{[1
,2
]}

Speghini, A. ^{[1
,2
]}

Bettinelli, M. ^{[1
,2
]}

机构：

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

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

[3] Univ Canterbury, Dept Phys & Astron, Christchurch 8020, New Zealand

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2012年 / 24卷 / 38期

关键词：

ELECTRONIC-STRUCTURE; DOUBLE PHOSPHATES; 4F(1)5D(1); PHOTOLUMINESCENCE; TRANSITIONS;

D O I：

10.1088/0953-8984/24/38/385502

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ca9Lu(PO4)(7):Ce3+ and Ca9Lu(PO4)(7):Pr3+ polycrystalline materials were synthesized by solid state reaction at high temperature. The materials were characterized by powder x-ray diffraction ( XRPD). The luminescence spectroscopy and the excited state dynamics of these compounds were investigated upon excitation with UV/VUV synchrotron radiation. Both materials showed efficient and fast 5d-4f emission upon direct VUV excitation into the 5d levels but only Ca9Lu(PO4)(7):Ce3+ revealed luminescence upon excitation across the bandgap. The decay kinetics of the 5d-4f emission upon VUV intra-center excitation is characterized by a decay time of 29 ns for Ce3+ and 17 ns for Pr3+ with no significant build-up after the excitation pulse. For the both compounds, no significant temperature dependence of the 5d-4f emission lifetime was observed within the range 8-300 K.

引用

页数：7

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