【摘要】 用水热法在低于 3 0 0℃成功地制备出具有不同形貌的 YBO3∶ Eu3+ 荧光粉 ,其反应温度比固相反应降低了约 80 0℃ .研究了初始原料、p H值、反应温度、反应溶剂和催化剂等条件对目的产物形貌及粒度的影响 ,得到了具有 Vaterite结构、粒度分布均匀的球形荧光粉的最佳合成工艺 .在 2 5 4nm激发下 ,水热法制备的球形 Y0 .95Eu0 .0 5BO3荧光粉最强发射峰位于 5 98nm处 ,属于 Eu3+ 的 5D0 →7F1 的跃迁 ,是固相反应所得样品的 1 .5倍 .这些结果表明 ,在 PDP和荧光灯等显示和照明用荧光粉的制备中水热法具有潜在的应用前景 .更多还原

【Abstract】 YBO 3∶Eu 3+ phosphor with different morphologies was successfully prepared by hydrothermal process below 300 ℃, which is lower about 800 ℃ than the temperature by solid state method. The reaction conditions, such as starting materials, pH value, reaction temperature, reaction media, catalyst, etc, were investigated. The optimum reaction conditions for preparing spherical vaterite type YBO 3∶Eu 3+ phosphor with uniform size was obtained. Under 254 nm excitation, the main emission peak appeared at 598 nm for spherical shape Y 0.95Eu 0.05BO 3 phosphor synthesized by hydrothermal process and the photoluminescence intensity(5D 0→7F 1 transition) of it was higher by 50% than that prepared by solid-state reaction. These results indicate that hydrothermal process has a promising application to preparing phosphors for lamps and displays.更多还原