Abstract:Achieving high efficiency and low efficiency roll-off simultaneously is of great significance for further application of thermally activated delayed fluorescent (TADF) emitters. A balance between radiative decay and reversed intersystem crossing must be carefully established. Herein, we propose a qunolino-acridine (QAc) donor composing two acridine with both planar (pAc) and bended (bAc) geometries. Combining with triazine, a TADF emitter QAc-TRZ is assembled. The pAc provides a well interaction with triazine … Show more
A nonplanar donor accelerates reverse intersystem crossing and the resulting electroluminescent devices achieve a maximum external quantum efficiency of 39.6% and a relieved efficiency roll-off of 7% under 1000 cd m−2.
A nonplanar donor accelerates reverse intersystem crossing and the resulting electroluminescent devices achieve a maximum external quantum efficiency of 39.6% and a relieved efficiency roll-off of 7% under 1000 cd m−2.
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