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A high‐performance hybrid white organic light‐emitting device (WOLED) is demonstrated based on an efficient novel thermally activated delayed fluorescence (TADF) blue exciplex system. This device shows a low turn‐on voltage of 2.5 V and maximum forward‐viewing external quantum efficiency of 25.5%, which opens a new avenue for achieving high‐performance hybrid WOLEDs with simple structures.
On page 7079, X.‐H. Zhang, C.‐S. Lee, and co‐workers discuss the drawbacks of single‐emitting‐layer hybrid white organic light‐emitting devices (WOLEDs) based on conventional fluorescent hosts, and demonstrate an effective way to overcome these drawbacks by using the thermally activated delayed fluorescent blue exciplex. Based on this new concept, high‐efficiency WOLEDs with a forward‐viewing power...
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