Eu^2+, Nd^3+를 도핑시킨 BaAl2O4 형광체의 광학 및 장잔광특성

Optical and Long After-Glow Characteristics of Eu^2+, Nd^3+ doped BaAl2O4 Phosphorescent Crystals

In recent days, the study of a new phosphorescent phosphor has been performed in order to overcome the defect of sulfide phosphor and increase the brightness and long after-glow characteristic of phosphorescent phosphor. Particularly, sulfide phosphor usually used is so chemically unstable that the study of oxide phosphors are processing. Eu^2+, Nd^3+ doped Ba-Al-O phosphors sintered at 600 sim1500^circC for 2hours had the PL emission spectrum and after-glow over 1200^{circ}C. In this system, as the mole concentration of alumina increases, emission bands of phosphors moved from 500nm to 380nm. The optimum concentration of flux was 5wt% and after-glow characteristics of phosphors were found at the host material molar ratio (BaCO3:Al2O3), 1:1 and 1:3.