中国物理B ›› 2016, Vol. 25 ›› Issue (4): 47802-047802.doi: 10.1088/1674-1056/25/4/047802
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
Hui Shi(石慧), Xi-Yan Zhang(张希艳), Wei-Li Dong(董玮利), Xiao-Yun Mi(米晓云), Neng-Li Wang(王能利), Yan Li(李艳), Hong-Wei Liu(刘宏伟)
Hui Shi(石慧), Xi-Yan Zhang(张希艳), Wei-Li Dong(董玮利), Xiao-Yun Mi(米晓云), Neng-Li Wang(王能利), Yan Li(李艳), Hong-Wei Liu(刘宏伟)
摘要: Y2O3:Eu3+ phosphors co-doped with different metal cations (Li+, Na+, K+, Mg2+, Ca2+) are prepared by the gel-combustion method with Y2O3, Eu2O3, and R(NO3)x (R=Li, Na, K, Mg, Ca) serving as raw materials and glycine as fuel, calcined at 1000 ℃ for 2 h. The synthesized Y2O3:Eu3+ phosphors doped with different metal cations and doping ratios are characterized by x-ray diffractometry (XRD), fluorescence and phosphorescent spectrophotometer. The co-doping metal cations are advantageous to the development of Y2O3:Eu3+ lattice. All the samples can emit red light peaked at 611 nm under 254-nm excited. The luminescence intensities of co-doping samples are increased because the cations increase the electron transition probability of Eu3+ from 5D0 level to 7F level. The fluorescence lifetime of Eu3+ (5D0→7F2) is increased by doping metal cations.
中图分类号: (Photoluminescence, properties and materials)