发明授权
- 专利标题： Organic electroluminescent element and organic electroluminescent device
- 专利标题（中）： 有机电致发光元件和有机电致发光器件
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申请号： US14273992申请日： 2014-05-09
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公开(公告)号： US09525009B2公开(公告)日： 2016-12-20
- 发明人: Futoshi Tanaka , Ichiro Imada , Hideki Gorohmaru
- 申请人： MITSUBISHI CHEMICAL CORPORATION
- 申请人地址： JP Chiyoda-ku
- 专利权人： MITSUBISHI CHEMICAL CORPORATION
- 当前专利权人： MITSUBISHI CHEMICAL CORPORATION
- 当前专利权人地址： JP Chiyoda-ku
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2011-247576 20111111
- 主分类号： H01L27/32
- IPC分类号： H01L27/32 ; H01L51/50 ; H01L51/52 ; H01L51/00
摘要：
The objection of invention is to provide an organic electroluminescent element having an excellent current-voltage property. The organic electroluminescent element of the invention comprises an anode, a light emitting layer and a cathode, in this order, wherein a total number of kinds of an electron transport material and a light emitting material contained in the light emitting layer is five or more. Preferably, a total number of kinds of an electron transport material contained in the light emitting layer is four or more, and at least one of an ionization potential and an electron affinity of three kinds or more of the electron transport materials contained in the light emitting layer is different from each other.
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