Oblon, McClelland, Maier & Neustadt, L.L.P.
Organic electroluminescence device
An organic electroluminescence device that includes an anode, an emitting layer that includes a host and a fluorescent dopant, an electron transporting zone, a cathode, a blocking layer adjacent to the emitting layer in the electron transporting zone where the blocking layer includes an aromatic heterocyclic derivative with an azine ring and where the triplet energy ETb (eV) of the aromatic heterocyclic derivative is larger than a triplet energy ETh (eV) of the host.
IDEMITSU KOSAN CO., LTD.
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Masahiro Hirokatsu Hiroyuki Hitoshi Yuichiro Sayaka Takayasu Yukitoshi
Kawamura Ito Saito Kuma Kawamura Mizutani Sado Jinde