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J. Korean Ceram. Soc. > Volume 37(8); 2000 > Article
Journal of the Korean Ceramic Society 2000;37(8): 774.
고발광 ${Zn_2}{SiO_4}$:Mn 형광체의 제조 및 특성
성부용, 정하균, 박희동, 김대수1
한국화학연구소 화학소재연구부
1충북대학교 화학공학과
Synthesis and Characterization of High Luminance ${Zn_2}{SiO_4}$:Mn Phosphors
ABSTRACT
In order to improve luminescence prperty of phosphors, we have synthesized Zn2SiO4:Mn phosphors by a new chemical synthetic route, i.e., the homogeneous precipitation method. This method has featured that the formation of phosphoris completed at relatively low temperature of 105$0^{circ}C$ and the particle morphology exhibits spherical shape to be well-dispersed and uniform size. At all the Mn concentration explored, phosphors prepared by this method have exhibited the improved emission intensities. In particular, the emission intensities of phosphors with Mn doping contents between 1 at% and 3.5 at% were higher about 40% than that of commercial phosphor. On the other hand, the decay time has been decreased from 23 ms to 11 ms with increasing Mn concentration. In addition, the phosphor composition containing 3 at% Mn has displayed the most saturated color.
Key words: ${Zn_2}{SiO_4}$:Mn, Homogeneous precipitation, Spherical, Emission, Decay time
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