Structure and upconversion luminescence of transparent glass-ceramics containing (Er,Yb)2(Ti,Zr)2O7 nanocrystals

被引：15
作者：
Dymshits, O. S. [1 ]
Loiko, P. A. [2 ]
Skoptsov, N. A. [2 ]
Malyarevich, A. M. [2 ]
Yumashev, K. V. [2 ]
Zhilin, A. A. [1 ]
Alekseeva, I. P. [1 ]
Tsenter, M. Ya. [1 ]
Bogdanov, K. [3 ]
机构：
[1] NITIOM SI Vavilov State Opt Inst, St Petersburg 192171, Russia
[2] Belarusian Natl Tech Univ, Ctr Opt Mat & Technol, Minsk 220013, BELARUS
[3] Natl Res Univ Informat Technol Mech & Opt, St Petersburg 197101, Russia
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2015年 / 409卷
关键词：
Transparent glass-ceramics; Fluorite-type structure; Pyrochlore-type structure; Erbium; Upconversion luminescence; SPECTROLUMINESCENCE PROPERTIES; PHOTOLUMINESCENCE PROPERTIES; PYROCHLORE STRUCTURE; GREEN; LASER; ER3+; YB3+; PERFORMANCE;
D O I：
10.1016/j.jnoncrysol.2014.11.012
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Transparent spinel-based glass-ceramics are synthesized on the basis of the magnesium aluminosilicate glass with the addition of nucleating agents (a mixture of TiO2 and ZrO2) and dopants, Er2O3 and Yb2O3, by a secondary heat-treatment at 800-1050 degrees C. The precipitation of rare-earth titanate-zirconate (Er,Yb)(2)(Ti,Zr)(2)O-7 nanosized (5-17 nm) crystals is observed, as well as their transformation from the defect-fluorite to the disordered pyrochlore structure. Optical absorption and upconversion luminescence spectra are studied for various Er/Yb ratios, as well as for single Er-doped glasses and glass-ceramics. A substantial enhancement (10-times) of the red emission (similar to 650 nm) with the heat-treatment is observed and explained with the analysis of the results of lifetime measurements of the H-2(11/2), the S-4(3/2), the E-4(9/2) and the I-4(11/2) excited states of Er3+ ions. The mechanisms of upconversion in (Er,Yb)(2)(Ti,Zr)(2)O-7 nanocrystals are discussed. (C) 2014 Elsevier B.V. All rights reserved.
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页码：54 / 62
页数：9
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