电场对单层有机电致发光二极管复合发光的影响  

Influence of Electric Field on Recombination Luminescence of Single Layer Organic Electroluminescent Diode

作　　者：赵楚军[1] 李宏建[1] 崔昊杨[1] 何英旋[1] 彭景翠[1] 

机构地区：[1]湖南大学应用物理系,湖南长沙410082

出　　处：《应用光学》2005年第2期47-50,59,共5页Journal of Applied Optics

基　　金：湖南省杰出青年科学基金(03EB003);湖南大学科学基金(2002A08)重点资助项目

摘　　要：　以电流连续性方程为基础,用易测量的注入电流密度来确定载流子浓度的边界值,得出载流子浓度和电流密度的解析表达式。计算并讨论了电子密度和电子电流密度在器件中的分布,电场对它们的影响以及电场与势垒对复合效率的影响。该模型较好地解释了有关实验现象。Based on the equation of the current continuity, the analytical expression of carrier and current densities is presented. In the calculation, the boundary condition is determined by considering the injection current that can be easily measured in experiments. We discussed the distributions of electron density and electron current density, analyzed the influence of electric field on the electron density, electron current density and recombination efficeiency, and investigated the effect of the electric field and potential barrier on recombination efficiency. The theoretical values based on the model are basically in agreement with the results that have been reported in the literature.

关 键 词：有机电致发光二极管 电场 载流子浓度 电致发光效率 

分 类 号：TN873.3[电子电信—信息与通信工程]