The Photoluminescence and Decay time of the Green Phosphor <TEX>$Zn_2$</TEX><TEX>$SiO_4$</TEX>:Mn, Mg

,; ,; ,; ,; ,; ,; ,; ,; ,; ,

J. Korean Ceram. Soc. > Volume 35(10); 1998 > Article

Journal of the Korean Ceramic Society 1998;35(10): 1101.

Mg와 Mn이 도핑된 $Zn_2$$SiO_4$ : Mn, Mg 녹색 형광체의 빛 발광과 잔광시간 특성

조봉현, 황택성, 손기선¹, 박희동¹, 장현주¹

충남대학교 화학공학과
¹한국화학연구소

The Photoluminescence and Decay time of the Green Phosphor $Zn_2$$SiO_4$:Mn, Mg

ABSTRACT

Various $Zn_{2-x}SiO_4$:xMn based green phosphors were investigated in association with a co-dopant. The co-dopant incorporated into the phosphors are believed to alter the internal energy state of $Zn_{2-x}SiO_4$ : xMn So that the improvement in their intensity could be expected. Phosphor samples were prepared using the solid state reaction therein raw powders are mixed in the acetone and successively fired at $1300^{circ}C$ for 4 hour. The fired powders are also heated up to $900^{circ}C$ for 2 hour in the reduced atmoshpere and thereby giving The fired powders are also heated up to $900^{circ}C$ for 2 hour in the reduced atmosphere and thereby giving rise to conspicuous enhancement of radiative efficiency. Basically the 0.08 mole ratio of the Mn con-centrations has the maximum value of the intensity so that a co-dopant are added to this Mn con-centration. When the Mg is co-doped with Mn luminescent intensity is proven to be promoted significantly.

Key words: Phosphor, Managanese doped Zincsilicate, Photoluminescence, Decay time