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P.151L: Late‐News Poster: Multi‐Scale Modeling of Organic Light‐Emitting Devices

Introduction Modeling is an essential part in research of organic light-emitting devices (OLEDs) and speeds up their development. An accurate model can be used to gain further insight into device operation and for optimizing device performance. Difficulties to simulate state-of-theart commercialized OLEDs arise from the fact that these devices are not only made of an active thin-film layer stack, but also contain thick incoherent layers such as color filters or scattering layers that enhance the light out-coupling efficiency of the device. Moreover, the area of OLED devices for lighting applications can reach several square centimeters and potential losses within electrodes cannot be neglected. For the first time, we present a comprehensive model for OLEDs spanning from microscopic charge transport and exciton dynamics to large-area panels. Our approach is able to simulate the influence of electrical conductivity enhancement in large-area electrodes and light extraction enhancement induced by incoherent scattering layers or interfaces. In a first part of this paper we repeat the fundamentals of the microscopic model, previously implemented in the commercial simulation software SETFOS [1]. In the second part we introduce the macroscopic approach for optical and electrical modeling.