[The effect of temperature on the 4f5d emission of Pr3+ in the Pr3+-doped SrAl12O19].
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.
Qi
Shi-Qun
SQ
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
Huang
Shi-Hua
SH
You
Fang-Tian
FT
Wang
Da-Wei
DW
Gao
Chang-Cheng
CC