STUDY OF MICROSTRUCTURE AND ELECTROLUMINESCENCE OF ZINC SULFIDE THIN FILM

The electroluminscent zinc sulfide thin film doped with erbium, fabri cated by thermal evaporation with two boats, are examined. The surface and internal electronic states of ZnS thin film are measured by means of X-ray diffracti on and X-ray photoemission spectroscopy. The information on the relations between electroluminescent characteristics and internal electronic states of the film is obtained. And the effects of the microstructure of thin film doped with rare earth erbium on electroluminescence are discussed as well.     

掺铒硫化锌薄膜电致发光的动态特性

报道了用分舟热蒸发研制的掺饵硫化锌薄膜器件电致发光的动态特性.运用多段式指数衰减公式与高斯函数的乘积来描述薄膜发光的瞬态过程,理论结果与实验数据十分接近,表明薄膜的陷阱能级对器件发光的弛豫效应产生了影响. 关键词：     

掺铒硫化锌薄膜界面态及其对驰豫发光影响的研究

应用ＸＰＳ及电容－电压测试研究硫化锌薄膜的界面态，采用电脉冲瞬态激发技术研究Ｅｒ＾３＋激活的ＺｎＳ薄膜特征跃迁非指数衰减过程的驰豫发光，分析了由于氧吸附形成的界面态对驰豫发光的影响。     

掺铒硫化锌薄膜的结构与发光

对硫化锌未灼烧的原粉、灼烧两次的粉料及分舟热蒸发研制的掺铒硫化锌电致发光薄膜器件,用Ｘ射线衍射（ＸＲＤ）、Ｘ射线光电子能谱（ＸＰＳ）和发光亮度测试技术、测量硫化 的粉、粉料、薄膜的表面及内部构态,获得微晶薄膜态与发光中心攻发光亮度关系的信息,江膜多晶的沉积有择优陬向的趋势;对（３１１）、（４００这些高指数的晶面,能量相对较小,稀土较容易置换这些晶粒格点上的Ｚｎ＾２＋,形成稀土发光中心;高指数的晶面