Molecular asymmetry and rigidification as strategies to activate and enhance thermally activated delayed fluorescence in deep-blue MR-TADF emitters

Authors:
Preprint
Publisher website
Google Scholar
Abstract
Two novel deep-blue multi-resonant thermally activate delayed fluorescnece (MR-TADF) emitters, 1B-CzCrs and 2B-CzCrs, containing a a fused carbazole unit were synthesized. The carbazole contributed to the emergence of TADF in these small molecules. Particularly, organic light-emitting diodes with 1B-CzCrs doped in mCP host achieve a maximum external quantum efficiency of 12.8% at CIE coordinates of (0.146, 0.062).
Funding Information
  • Japan Society for the Promotion of Science (23H05406)
  • Japan Society for the Promotion of Science (23K20039)
  • Engineering and Physical Sciences Research Council (EP/R035164/1)
  • Engineering and Physical Sciences Research Council (EP/W007517/1)
  • City University of Hong Kong (9610637)
  • City University of Hong Kong (9231531)