典型文献
Ce3+sensitized Tb3+and Dy3+photoluminescence in β-LaB5O9 prepared by sol-gel method
文献摘要：
Rare earth(RE)pentaborates,both α-and β-polymorphs,are good candidates for photoluminescent hosts suitable for various RE activators.Ce3+acts not only as an activator itself,but also as a sensitizer to other rare earth activators,like in the case of commercial green phosphor CeMgAl11O19∶Tb3+.In this work,two solid solutions of β-La0.9-xCe0.1TbxB5O9(0≤x≤0.15)and β-La0.9-yCe0.1DyyB5O9(0≤y≤0.07)were prepared by sol-gel method with high crystallinity,and the phase purity was confirmed with careful analyses on powder X-ray diffraction patterns.Energy transfers are expected due to the over-lapping of Ce3+emission with the Tb3+/Dy3+excitation.Indeed,the steady photoluminescence spectra indicate the decrease of the Ce3+emission and the increase of the Tb3+/Dy3+emission,and the fluo-rescence decay curves exhibit the decrease of the average lifetime of Ce3+.The energy transfer efficiency is estimated to be 60％at x=0.15 and 55％at y=0.07,respectively.The mechanism is likely through the dipole-dipole electric interactions for both cases.With this rationale,the Tb3+and Dy3+emissions are greatly enhanced,in particular,the white emission of Dy3+in β-La0.85Ce0.1Dy0.05B5O9 is enhanced by 20 times.
文献关键词：
中图分类号：
作者姓名：
Yuxuan Qi;Ruirui Yang;Yan Gao;Pengfei Jiang;Rihong Cong;Tao Yang
作者机构：
College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 401331,China
文献出处：
引用格式：
[1]Yuxuan Qi;Ruirui Yang;Yan Gao;Pengfei Jiang;Rihong Cong;Tao Yang-.Ce3+sensitized Tb3+and Dy3+photoluminescence in β-LaB5O9 prepared by sol-gel method)[J].稀土学报（英文版）,2022(08):1181-1186
A类：
Ce3+sensitized,Tb3+and,Dy3+photoluminescence,LaB5O9,pentaborates,Ce3+acts,CeMgAl11O19,xCe0,1TbxB5O9,yCe0,1DyyB5O9,Ce3+emission,Dy3+excitation,Dy3+emission,Dy3+emissions,Dy3+in,85Ce0,1Dy0,05B5O9
B类：
prepared,by,gel,method,Rare,earth,RE,both,polymorphs,good,candidates,photoluminescent,hosts,suitable,various,activators,not,only,itself,but,also,sensitizer,other,rare,commercial,green,phosphor,this,work,two,solid,solutions,La0,were,high,crystallinity,phase,purity,was,confirmed,careful,analyses,powder,ray,diffraction,patterns,Energy,transfers,expected,due,over,lapping,Indeed,steady,spectra,indicate,decrease,increase,fluo,rescence,decay,curves,exhibit,average,lifetime,energy,efficiency,estimated,be,respectively,mechanism,likely,through,dipole,electric,interactions,cases,With,rationale,greatly,enhanced,particular,white,times
AB值：
0.459257
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