Governing of down-shifting processes in LiLaP_4O_(12):Tb^(3+),Yb^(3+) for enhancement of its near-infrared emission
Governing of down-shifting processes in LiLaP_4O_(12):Tb^(3+),Yb^(3+) for enhancement of its near-infrared emission作者机构：Institute of Low Temperature and Structure Research Polish Academy of Sciences
出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)
年 卷 期：2016年第34卷第8期
页 面：833-836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]
主 题：downshifting LiLaP4O12 rb3+ yb3+ rare earths
摘 要：Downshifting behavior of the Tb3＋-gb3＋ co-doped nanocrystalline LiLaP4012 powders synthesized by co-precipitation method was presented and discussed. The structural phase purity of obtained material was confirmed by X-ray diffraction （XRD） measurements. Strong enhancement of ytterbium 2 2 - 3＋ F5/2- F7/2 emission intensity was observed with decreasing Tb concentration un- der UV excitation. Dependence of efficiency of energy transfer between dopants on pumping wavelength was investigated due to bet- ter understanding of down-shifting mechanism. It was found that luminescence intensity of Yb3＋ decreased above 10 tool.% dopant con- tent, what was caused by concentration quenching. The power dependence measurements were carried out at 77 and 300 K. The re- sulting slopes had the same value of 1, what indicated the existence of linear down-shifting process, independent of the temperature.
维普期刊数据库
同方期刊数据库