Oblon, Spivak, 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 dopant, a blocking layer, an electron injecting layer, and a cathode where the blocking layer includes an aromatic heterocyclic derivative, the triplet energy ETb (eV) of the blocking layer is larger than a triplet energy ETh (eV) of the host, and the affinity Ab (eV) of the blocking layer and an affinity Ae (eV) of the electron injecting layer satisfy a relationship of Ae−Ab<0.2.
Idemitsu Kosan Co., Ltd.
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H01L Y10S H01L H01L H01L
inventional additional additional additional additional
Masahiro Hiroyuki Hirokatsu Hitoshi Yuichiro Yukitoshi Sayaka Takayasu
Kawamura Saito Ito Kuma Kawamura Jinde Mizutani Sado