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

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. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.