Effect of co-doped metal caions on the properties of Y_2O_3:Eu~(3+) phosphors synthesized by gel-combustion method |
| |
| Affiliation: | School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China |
| |
| Abstract: | 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. |
| |
| Keywords: | combustion method metal cations Y2O3:Eu3+ |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
