双层有机发光二极管中复合效率和复合区域宽度的研究  

Investigation of the recombination efficiency and recombination zone in bilayer OLEDs

作　　者：李宏建[1,2] 赵楚军[3] 易丹青[4] 黄伯云[4] 何英旋[3] 彭景翠[3] 

机构地区：[1]中南大学物理科学与技术学院 [2]湖南大学应用物理系,长沙410082 [3]湖南大学应用物理系 [4]中南大学材料科学与工程学院

出　　处：《原子与分子物理学报》2005年第3期461-466,共6页Journal of Atomic and Molecular Physics

基　　金：湖南省杰出青年科学基金(No.03JJY1008);中国博士后科学基金(No.2004035083)资助项目

摘　　要：本文建立了双层有机发光二极管中载流子的注入、输运和复合的理论模型。模型中采用了较合理的无序跳跃模型来处理界面问题。计算和讨论了空穴传输层厚度和内界面处的空穴势垒对器件复合效率和复合区域宽度的影响。结果表明:器件结构的变化导致电场强度在器件中的重新分布,空穴传输层厚度和内界面处空穴势垒的变化对器件的复合效率和复合区域宽度有重要影响。An analytical model for the injection, transport and recombination of carriers in bilayer organic light-emitting diode was presented. Based on the bilayer organic light-emitting diode with ohmic anode and injection limited cathode, the influences of thickness of hole transport layer and the energy barrier of OOI for holes on its properties have been investigated. The results show that changing the geometry of OLEDs＇structure and the energy barrier of OOI for holes can influence the recombination efficiency and recombination zone greatly. The calculated results and the reported data in Ref. 8 show good agreement.

关 键 词：双层OLEDs 复合区域 复合效率 

分 类 号：TN873.3[电子电信—信息与通信工程]