Infrared to visible upconversion luminescence properties in the system Ln2BaZnO5 (Ln = La, Gd)

被引：26

作者：

Birkel, Alexander ^{[3
]}

Mikhailovsky, Alexander A. ^{[2
]}

Cheetham, Anthony K. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[2] Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA

[3] Johannes Gutenberg Univ Mainz, Inst Inorgan & Analyt Chem, D-55099 Mainz, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2009年 / 477卷 / 4-6期

关键词：

POWDER DIFFRACTION; PHOTON AVALANCHE; QUANTUM COUNTERS; SOLID-STATE; IONS; ER; TM; HO;

D O I：

10.1016/j.cplett.2009.06.079

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the upconversion properties of the rare-earth doped systems La2BaZnO5 (I4/mcm) and Gd2BaZnO5 (Pbnm). The dependence of the luminescence properties on the identity and the concentration of the dopants, Er3+ and Er3+ co-doped with Yb3+, as well as on the synthetic route, was examined. Following coherent excitation at 975 nm, strong upconversion emission was observed in the visible region (525, 550 and 660 nm). Power dependence studies revealed a two photon process for these emissions. In the co-doped samples, a blue emission (410 nm) could also be observed. For this emission, the power dependence studies confirmed a three photon process. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：325 / 329

页数：5

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