Modulation of Exciton Generation in Organic Active Planar pn Heterojunction: Toward Low Driving Voltage and High‐Efficiency OLEDs Employing Conventional and Thermally Activated Delayed Fluorescent Emitters

Abstract

Organic light-emitting diodes (OLEDs) combining low driving voltage and high efficiency are designed by employing conventional and thermally activated delayed fluorescence emitters through modulation of excitons generated at the planar p-n heterojunction region. To date, this approach enables the highest power efficiency for yellow-green emitting fluorescent OLEDs with a simplified structure.