发明申请
- 专利标题: ORGANIC ELECTROLUMINESCENT ELEMENT
- 专利标题(中): 有机电致发光元件
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申请号: US13914540申请日: 2013-06-10
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公开(公告)号: US20130328027A1公开(公告)日: 2013-12-12
- 发明人: Wataru Sotoyama , Daisuke Inoue
- 申请人: Wataru Sotoyama , Daisuke Inoue
- 申请人地址: IE Dublin 4
- 专利权人: UDC IRELAND LIMITED
- 当前专利权人: UDC IRELAND LIMITED
- 当前专利权人地址: IE Dublin 4
- 优先权: JP2012-133078 20120612
- 主分类号: H01L51/50
- IPC分类号: H01L51/50
摘要:
[It is an object] to provide an organic electroluminescent element with which the initial durability of the element can be greatly improved while maintaining the efficiency of the element at a high level. This is an organic electroluminescent element having an anode, a hole injection layer, a first hole transport layer, a second hole transport layer, a light-emitting layer, and a cathode, in this order, with this organic electroluminescent element being such that the aforementioned hole injection layer includes a material for which the energy of the lowest unoccupied molecular orbital (LUMO) is less than −4.0 eV and also such that the energy E1(LUMO) of the LUMO of the material included in the aforementioned first hole transport layer and the energy E2(LUMO) of the LUMO of the material included in the aforementioned second hole transport layer satisfy [the inequality] E1(LUMO)>E2(LUMO).
公开/授权文献
- US09412964B2 Organic electroluminescent element 公开/授权日:2016-08-09
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