Abstract
In this work, we use iridium (III)bis[4-(tert-butyl)−2,6-diuoro-2,3-bipyridine]acetylacetonate (FK306) doped layer as an electron-transport layer to optimize the electron density on emitters with suitable device design strategy. Because of the specific electron trapping and transporting abilities of FK306, electrons can progressively inject into emitter molecules, yellow thermally activated delayed fluorescence (TADF) devices showed significant improvement in electroluminescent performance with reduced efficiency roll-off. Finally, the optimal device obtained the maximum brightness of 22474 cd/m2, maximum current efficiency, power efficiency and external quantum efficiency (EQE) up to 73.06 cd/A, 69.52 lm/W and 20.7%, respectively. At 1000 cd/m2, the current efficiency and EQE of the same device can still remain as 42.22 cd/A and 11.9%, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.