|
|
|
Journal of the Korean Ceramic Society 1998;35(7): 757. |
| /TEX> Phosphor의 발광특성에 관한 연구 |
| 이미애, 남산, 김명호1, 서경수2, 변재동 |
고려대학교 재료공학과
1창원대학교 세라믹공학과
2한국전자통신연구소 신기능반도체연구부 |
| Luminesence Characteristics of SrTiO$_3$:Pr$^{3+}$,Ga$^{3+}$ Phosphor |
|
|
|
|
|
|
|
| ABSTRACT |
|
The effect of {{{{ {Ga }^{3+ } }} addition on the photoluminescence and cathodoluminescence of {{{{ {SrTiO}_{3 } }}:{{{{ { Pr}^{3+ } }} was stu-died by performing the excitation emission and decay time measurements. Addition of {{{{ {Ga }^{3+ } }} in {{{{ {SrTiO}_{3 } }}:{{{{ { Pr}^{3+ } }} resulted in a considerable enhancement of {{{{ { Pr}^{3+ } }} emission intensity. From the analysis of the experimental results the following mechanism is proposed. Excitation in the {{{{ {SrTiO}_{3 } }} host lattice leads to the formation of electrons in the conduction band and holes in the valence band. The electrons in the conduction band re-combine radiatively with the holes trapped at {{{{ { Ga}^{3+ } }} and the energy is transferred to {{{{ { Pr}^{3+ } }} ion which give its own characteristic red emission. |
| Key words:
SrTiO$_3$:Pr$^{3+}$,Ga$^{3+}$, Photoluminescence, Cathodoluminescence |
|
|
|
PDF Links
Full text via DOI 
Download Citation 
