Influence of Multiple rISC Channels on the Maximum Efficiency and Roll-Off of TADF OLEDs.

ABSTRACT: In this work, we look into the detailed photophysical characterization of a multidonor-acceptor (D-A) family of thermally activated delayed fluorescent (TADF) emitters to find correlations with their device performance. Increasing the number of closely packed Ds around the A core leads to changes in dihedral angles between Ds and A, affecting the highest occupied molecular orbital (HOMO)/lowest unpccupied molecualar orbital (LUMO) separation and impacting the singlet-triplet energy gaps. Moreover, D-A dihedral angles change molecular conjugation affecting the spread of charge-transfer state energies as well as the energy of D local triplet states. The coupling between these triplet states and the dispersion in CT states lead to the appearanc

SUBMITTER: Dos Santos PL 

PROVIDER: S-EPMC11457217 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature