In this study, a comprehensive model for the numerical simulation of electrical and optical characteristics of multilayer organic light-emitting devices (OLED) is presented. The model consists of three parts: charge carrier transport model, exciton model, and a post-processing part for calculating luminance. The defect states in the organic layers are modeled and are introduced into the equations. For demonstrating the rule of the defect states in such devices, a multilayer OLED is considered consisting of a host–guest emissive layer sandwiched between electron and hole transport layers. The current density and luminance results of the analyzed device are compared with the experimental data. We have found that by considering the defect states, there is good accordance between the simulation results and the experimental data.

中文翻译：

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具有主客体发射层的多层有机发光二极管的数值模拟：缺陷态的作用

在这项研究中，提出了一种用于多层有机发光器件 (OLED) 电学和光学特性数值模拟的综合模型。该模型由三部分组成：电荷载流子传输模型、激子模型和计算亮度的后处理部分。有机层中的缺陷状态被建模并被引入到方程中。为了证明此类器件中的缺陷态规则，多层 OLED 被认为由夹在电子和空穴传输层之间的主客体发射层组成。将分析器件的电流密度和亮度结果与实验数据进行比较。我们发现，通过考虑缺陷状态，模拟结果与实验数据有很好的一致性。