OLED器件电荷注入模型的MATLAB分析计算  

MATLAB analysis and computation of OLED charge injection model

作　　者：王忆锋[1] 唐利斌[1] 岳清[1] 

机构地区：[1]昆明物理研究所,云南昆明650223

出　　处：《激光与红外》2011年第1期117-121,共5页Laser & Infrared

摘　　要：介绍了电荷从OLED金属电极注入到一个随机跳跃体系(例如配对聚合物或分子掺杂聚合物)的模型。它包括电荷载流子从电极的费米能级到介质跳跃态分布尾态之间的注入,其结果可能是电荷载流子返回到电极,或者是受到镜像引力势的作用而形成扩散逃逸。后者类似于一维Onsager型激子解离。该模型将注入电流处理为电场、温度以及跳跃态分布能量宽度的函数。提出了OLED器件中相对电流密度的概念。介绍了用MATLAB软件分析计算该模型的方法和技巧。The model of charge injection from a metallic electrode of organic light emitting diodes（OLED）into a random hopping system,e.g.,a conjugated polymer or a molecularly doped polymer,is presented in this paper.It encompasses injection of a charge carrier from the Fermi level of the electrode into tail states of the distribution of hopping states of the dielectric followed by either return of the charge carrier to the electrode or diffusive escape from the attractive image potential.The latter process resembles Onsager-type geminate pair dissociation in one dimension.The model treats the injection current as a function of electric field,temperature and energetic width of the distribution of hopping states.The concept of relative current density of OLED device is proposed.The methods and skills of analysis and computation of the model with MATLAB is introduced.

关 键 词：电荷注入 电流密度 数值仿真模型 有机发光二极管 

分 类 号：TN304.5[电子电信—物理电子学]