45‐3: Comprehensive Exploration of Exciton Quenching in OLEDs through Combined Characterization and Computational Simulation

Organic light‐emitting diodes (OLEDs) feature flexible and homogeneous large area emission. Although, in terms of performance, OLEDs are typically characterized by an efficiency drop at high brightness levels. This phenomenon, usually addressed as efficiency roll‐off, is mainly caused by exciton quenching processes. Here, we introduce an improved methodology for exploring exciton quenching in OLEDs, which integrates both characterization and device simulation. Through a multitarget optimization process, we effectively distinguish between triplet‐polaron quenching (TPQ) and triplet‐triplet annihilation (TTA).