졸-겔 합성에서 pH 및 건조온도가 Zn₂SiO₄:Mn,Al 녹색 형광체의 발광특성에 미치는 영향 = Effect of pH and Drying Temperature on Luminescent Properties of Zn₂SiO₄:Mn,Al Green Phosphors by Sol-Gel Technique

다국어 초록 (Multilingual Abstract)

In order to improve the performance of green emitting phosphors for plasma display panel, the $Zn_2SiO_4:Mn,Al$ phosphors were synthesized using sol-gel technique and studied using SEM and VUV photoluminescence spectrometer. pH values of the starting solutions (pH = 0.5$\~$2.34) were controled by HCl as the catalysis of hydrolysis and wet gels were dried at $80^{\circ}C$ and $120^{\circ}C$, respectively. We investigated the effects of pH and drying temperatures during sol-gel processes. The results indicated that the phosphor prepared at pH = 1 showed the maximum emission intensity in both drying conditions and the effect of pH of the starting solution on morphology were increased with particle size as HCl and phosphor dried at high temperature showed more spherical and smaller particles than at low.