蓝色显示材料及器件的研究

Preparation of Blue Display Materials and Devices

用Ｈ２和ＣＳ２还原法制备ＣｅＳｒＳ发光材料，分析了两种方法对材料的结构及发光特性的影响，得到了最高亮度为９５０ｃｄ／ｍ２（１０００Ｈｚ）的ＣｅＳｒＳ薄膜电致发光（ＴＦＥＬ）器件；用高温固相法得到ＣｅＳｒＧａ２Ｓ４荧光粉，用射频溅射沉积的ＣｅＳｒＧａ２Ｓ４薄膜在６００℃以上、Ｈ２Ｓ气氛下快速热处理可以改善薄膜结晶性能，提高杂质激发峰强度，得到好的光致发光（ＰＬ）发光性能，以陶瓷片作为基片同时作为绝缘层制得的ＣｅＳｒＧａ２Ｓ４薄膜电致发光器件有微弱的发光。

SrS phosphors doped with Ce^3+ was prepared by reducing SrSO_4 in H_2 and CS_2 atmosphere, and the influence of these two methods on the structure of powder and the characteristic of photoluminescence was studied. The maximum brightness of Ce∶SrS TFEL was 950 cd/m2 under 1000 Hz. The powder of SrGa2S4 doped with Ce3+ was made by hightemprature solid solution method. The Ce∶SrGa2S4 thin film was prepared by RF sputtering and the crystal characteristic of it was improved by annealing in H2S atmosphere at over 600℃, aslo the characteristic was developed. SrGa2S4 thin film electroluminescent device with ceramic as substrate and insulator had a little electroluminescence.