Novel Ir(ppy)3 Derivatives: Simple Structure Modification Toward Nearly 30% External Quantum Efficiency in Phosphorescent Organic Light‐Emitting Diodes

Novel tris-cyclometalated iridium phosphors with diphenylamino groups and multiple fluorine atoms incorporated on cyclometalating ligands are developed for use as doped emitters in organic light-emitting diodes (OLEDs). The green phosphorescent OLEDs based on heteroleptic iridium complexes exhibit an external quantum efficiency of 30% even using simple device structures, which is among the highest values ever reported for iridium phosphors. 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.