I – V characteristics of these light-emitting devices showed a trend consistent with the charge mobility of their host materials ( Fig. 6b ). 44′DPEPO endowed its devices with the highest J , while the J of 24′DPEPO -based devices was secondary.
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Extremely condensing triplet states of DPEPO-type hosts through constitutional isomerization for high-efficiency deep-blue thermally activated delayed fluorescence diodes.
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