| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5403859 | Journal of Luminescence | 2007 | 4 Pages |
Abstract
VUV-Vis range spectroscopic characteristics from Pr3+ ions in CaMgAl14O23, LaF3, YBO3, YPO4 and LaF3 nanocrystals doped oxyfluoride glass ceramics are presented. Upon excitation into the 4f5d states, the emission spectra of Pr3+ correlated with the relative positions of the 1S0 state and the lowest 4f5d states. For Pr3+ ions in CaMgAl14O23 and LaF3, the lowest 4f5d state lies above the 1S0 state. So an efficient photon cascade emission occurred due to a two-step intraconfigurational 4f2â4f2 transition. For Pr3+ ions in YBO3 and YPO4, the lowest 4f5d state lies below the 1S0 state. The UV emission of 4f5dâ4f2 transition was observed. Both types of Pr3+ ions exist in the oxyfluoride glass containing LaF3 nanocrystals. The positions of the lowest 4f5d state of Pr3+ in different host lattices are given.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Fangtian You, Shihua Huang, Chunxia Meng, Dawei Wang, Jianhua Xu, Yan Huang, Guobin Zhang,