Synthesis and luminescence properties of novel Ce^3＋-doped Yb3Al5-xGaxO12 garnets with very fast decay time

作     者：Ru Li Jie Yin Fei Du Peng Zhang Shangke Pan Jianguo Pan 

作者机构：State Key Laboratory Base of Novel Functional Materials and Preparation Science. School of Material Science and Chemical Engineering. Ningho UniversityZhejiang 315211. China Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province Ningbo 315211 China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2018年第36卷第8期

页      面：806-810页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Project supported by National Natural Science Foundation of China(11475242,51272263) K.C.Wong Magna Fund in Ningbo University 

主　　题：Ytterbium aluminum gallium garnets High temperature solid-state reaction Photoluminescence Decay time Rare earths 

摘      要：A novel series of Ce^3＋-doped Yb3 Al（5-x）GaxO（12）（x = 0, 1,2, 3,4, 5） powders of ytterbium aluminum gallium garnets were synthesized by high temperature solid-state reaction in a carbon reducing atmosphere. The ytterbium aluminum garnets were characterized by X-ray powder diffraction, UV-Vis diffuse reflectance spectra, photoluminescence spectra and decay curves. Moreover, the substitution effect for the Al^3＋ sites with Ga^3＋ in 0.5 at%Ce：Yb3 Al（5-x）GaxO（12）（x = 0,1, 2, 3, 4, 5） garnets were discussed. With the increase of Ga^3＋ ion concentration, the visible absorption peaks within 400-450 nm have blue shift phenomenon,while the absorption peaks in the range of 330-350 nm and the absorption band edge red ***, the short decay times are very short with less than 10 ns due to the Yb^3＋ ＋ Ce^3＋→ Yb^2＋ ＋ Ce^4＋ electron transfer reaction.