Oblon, McClelland, Maier & Neustadt, L.L.P.
Organic electroluminescent element and electronic device
An organic electroluminescence device includes: an anode; an emitting layer; and a cathode, the emitting layer containing a first material, a second material and a third material, the first material being a fluorescent material, the second material being a delayed fluorescent material, the third material having a singlet energy larger than a singlet energy of the second material.
IDEMITSU KOSAN CO., LTD.
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Kei Toshinari Ryohei Yumiko
Yoshida Ogiwara Hashimoto Mizuki