Optimizing Energy Level Alignment for Achieving Record-breaking Efficiency in Hot Exciton Deep Red OLEDs

Abstract

To effectively compete with the quenching process in long-wavelength regions like deep red (DR) and near-infrared (NIR), rapid radiative decay is urgently needed to address the challenges posed by the "energy gap law". Herein, we confirmed that it is crucial for hot exciton emitters to attain a narrow energy gap (Δ