Oblon, McClelland, Maier & Neustadt, L.L.P.
Organic electroluminescent element, electronic device and compound
An organic electroluminescence device includes an anode, an emitting layer, and a cathode, the emitting layer including a delayed-fluorescent first compound represented by a formula (1), and a fluorescent second compound. In the formula (1), Ar1 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and the like, and ArEWG is a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms and including one or more nitrogen atom in the ring, or an aryl group having 6 to 30 ring carbon atoms and substituted by one or more cyano group, at least one of Ar1 and ArX being at least one group selected from the group consisting of groups represented by a formula (1a) and the like.
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C H C H H H H C C H C
C07D H01L C09K H01L H01L H01L H01L C09K C07D H01L C09K
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Toshinari Kei Ryohei Yuichiro Masatoshi
Ogiwara Yoshida Hashimoto Kawamura Saito