Oblon, McClelland, Maier & Neustadt, L.L.P.
Organic electroluminescence element and electronic device
An organic electroluminescence device includes an anode, a cathode, a first organic layer interposed between the anode and the cathode, a second organic layer interposed between the first organic layer and the cathode, and a bipolar layer interposed between the first organic layer and the second organic layer and having bipolar characteristics, in which at least one of the first organic layer and the second organic layer includes the first compound and the second compound, the first compound exhibits delayed fluorescence, and an energy gap T77K(M2) at 77[K] of the second compound is larger than an energy gap T77K(M1) at 77[K] of the first compound.
IDEMITSU KOSAN CO., LTD.
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Toshinari Kei
Ogiwara Yoshida