Improved luminescent properties of SrZn_2(PO_4)_2:Sm^(3+) doped with Li^+, Na^+ and K^+ ions  

作　　者：陆伟 刘宇飞 王颖 王志军 庞立斌 

机构地区：[1]Tangshan Vocational & Technical College [2]Library,Hebei University [3]College of Physics Science & Technology,Hebei University [4]Department of Foreign Language Teaching and Research,Hebei University

出　　处：《Optoelectronics Letters》2015年第5期366-369,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.50902042);the Natural Science Foundation of Hebei Province in China(Nos.A2014201035 and E2014201037);the Education Office Research Foundation of Hebei Province in China(Nos.ZD2014036 and QN2014085)

摘　　要：SrZn2(PO4)2:Sm3+ phosphor was synthesized by a high temperature solid-state reaction in atmosphere. SrZn2(PO4)2:Sm3+ phosphor is efficiently excited by ultraviolet(UV) and blue light, and the emission peaks are assigned to the transitions of 4G5/2-6H5/2(563 nm), 4G5/2-6H7/2(597 nm and 605 nm) and 4G5/2-6H9/2(644 nm and 653 nm). The emission intensities of SrZn2(PO4)2:Sm3+ are influenced by Sm3+ concentration, and the concentration quenching effect of SrZn2(PO4)2:Sm3+ is also observed. When doping A+(A=Li, Na and K) ions, the emission intensity of SrZn2(PO4)2:Sm3+ can be obviously enhanced. The Commission Internationale de l'Eclairage(CIE) color coordinates of SrZn2(PO4)2:Sm3+ locate in the orange-red region. The results indicate that the phosphor has a potential application in white light emitting diodes(LEDs).

关 键 词：phosphor luminescent coordinates ultraviolet Internationale excited doping transitions quenching dipole 

分 类 号：TN312.8[电子电信—物理电子学]