典型文献
Synthesis,crystal structure and photoluminescence properties of novel double perovskite La2CaSnO6∶Eu3+red-emitting phosphors
文献摘要：
A series of new double perovskite La2-xEuxCaSnO6(0≤x≤0.8)red phosphors were synthesized by traditional solid-state reaction.The phase,microstructure,photoluminescence(PL)properties,quan-tum efficiency,and thermal stability of the phosphors were investigated.La2CaSnO6 matrix has a monoclinic double perovskite structure with space group P21/n.Under near-ultraviolet(UV)light at 395 nm,La2-xEuxCaSnO6 phosphors exhibit the most typical red emission peak at 614 nm,which corresponds to 5D0→7F2 electric dipole transition of Eu3+.The optimum Eu3+doping content is attained at x=0.5,and the La1.5Eu0.5CaSnO6 phosphor shows a moderate quantum efficiency(32.3％)and high color purity(92.2％).Besides,the temperature-dependent spectrum of the phosphor was studied.The emission intensity of Eu3+at 423 K decreases to 70.94％of the initial intensity at 303 K,and the activation energy △E is estimated to be 0.232 eV,suggesting that the phosphors possess good thermal stability.The fabricated w-LED based on the phosphors has higher Ra(89),lower CCT(4539K),and better chromaticity coordinates(0.371,0.428).These results prove that the Eu3+-doped La2CaSnO6 red phosphor has great potential applications in w-LEDs.
文献关键词：
中图分类号：
作者姓名：
Yangyi Xu;Guifang Li;Xufeng Guan;Yunge Wei;Maolin Zhang
作者机构：
School of Advanced Materials and Nano Technology,Xidian University,Xi'an 710071,China
文献出处：
引用格式：
[1]Yangyi Xu;Guifang Li;Xufeng Guan;Yunge Wei;Maolin Zhang-.Synthesis,crystal structure and photoluminescence properties of novel double perovskite La2CaSnO6∶Eu3+red-emitting phosphors)[J].稀土学报（英文版）,2022(11):1682-1690
A类：
La2CaSnO6,Eu3+red,xEuxCaSnO6,5Eu0,5CaSnO6,Eu3+at,4539K
B类：
Synthesis,crystal,photoluminescence,properties,novel,double,perovskite,emitting,phosphors,series,new,were,synthesized,by,traditional,solid,state,reaction,phase,microstructure,PL,efficiency,thermal,stability,investigated,matrix,monoclinic,space,group,P21,Under,near,ultraviolet,UV,light,exhibit,most,typical,emission,peak,which,corresponds,5D0,7F2,electric,dipole,transition,optimum,Eu3+doping,content,attained,La1,shows,moderate,quantum,color,purity,Besides,temperature,dependent,spectrum,was,studied,intensity,decreases,initial,activation,energy,estimated,eV,suggesting,that,possess,good,fabricated,higher,Ra,lower,CCT,better,chromaticity,coordinates,These,results,prove,doped,great,potential,applications,LEDs
AB值：
0.518859
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