Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1461275 | Ceramics International | 2014 | 8 Pages |
Abstract
A novel Ce3+ doped RbBaPO4 phosphor was prepared via the conventional solid state reaction. The phosphor was investigated by XRD, photoluminescence excitation and emission spectra. This phosphor exhibited an emission peak in the range of 345-355Â nm under 303Â nm excitation. Four 5d levels corresponding to the 4f-5d transition of Ce3+ were identified. The spectroscopic parameters, for example, the 5d barycenter, crystal field splitting and stokes shift were discussed. The optimal Ce3+ concentration and its critical energy transfer distance were determined to be 9Â mol% and about 13Â Ã
respectively. The corresponding concentration quenching mechanism was deemed to be the electric dipole-quadrupole interaction. The spontaneous emission probability of the transition between the excited state (5d) and the ground state (2FJ(J=7/2,5/2)) was discussed quantitatively. Significantly, the configurational coordinate diagram was firstly engaged to illustrate the red shift phenomenon, indicating a distinctive approach for depicting the red shift.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Junhua Chen, Weiren Zhao, Jianming Zhong, Licai Lan, Jianqing Wang, Nenghuo Wang,