OLED器件空间电荷限制电流模型的MATLAB分析计算

MATLAB Analysis and Computation of OLED Space Charge Limited Current Models

介绍了OLED器件空间电荷限制电流(SCLC)模型的MATLAB分析计算方法。SCLC模型可能是线性或非线性微分方程,将阳极与阴极之间的空间分割为一系列节点以后,SCLC模型可以通过有限差分方法整理为一个矩阵方程。对于线性模型,只需要调用一次MATLAB矩阵左除命令即可获得其数值解。对于非线性模型,可以通过牛顿法做矩阵迭代计算求出其数值解。介绍了确定电场函数的方法。给出了所用的MATLAB计算程序。该方法概念简单,使用方便,不需要花费较多精力编程即可以求解OLED器件的SCLC模型。

The MATLAB analysis and computation methods for space charge limited current model（SCLC） of organic light emitting diode（OLED） are presented.The SCLC model may appear in the form of linear or non-linear differential equations,and it can be formulated as a matrix equation by finite difference approximations after dividing the space between anode and cathode into a series of discrete nodes.The numerical solution can be obtained by calling matrix left division command in MATLAB only once for linear SCLC model.And for non-linear SCLC model,its numerical solution can be given by matrix iteration with Newton method.The techniques to determine the electric field function is introduced.The MATLAB programs used in the paper are listed.The scheme is simple in concept,convenient in operation and can be used to solve the SCLC model of OLEDs without more efforts in programming.