title: [The effect of temperature on the 4f5d emission of Pr3+ in the Pr3+-doped SrAl12O19].
abstract: The emission spectra of SrAl12O19 : Pr3+ at temperature from 308 to 483 K were investigated under vacuum ultraviolet excitation. Both the dipole-forbidden 4f2 --> 4f2 transition and the dipole-allowed 4f5d --> 4f2 transitions were observed. The intensity of the 4f5d --> 4f2 emission relative to that of the 4f2 --> 4f2 emission increased with increasing temperature. A thermal equilibrium model was applied to the system consisting of the 1S0 state and the lowest 4f5d states of Pr3+, and the temperature dependence of emission spectra of Pr3+ in the Pr(3+)-doped SrAl12O19 was well explained.
authors: Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China. qishi.yyan@yahoo.com.cn
authors: Shi-Qun
authors: SQ
authors: Qi
authors: Shi-Hua
authors: SH
authors: Huang
authors: Fang-Tian
authors: FT
authors: You
authors: Da-Wei
authors: DW
authors: Wang
authors: Chang-Cheng
authors: CC
authors: Gao