- 专利标题: ORGANIC ELECTROLUMINESCENT ELEMENT
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申请号: EP10825088.7申请日: 2010-10-21
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公开(公告)号: EP2492988B1公开(公告)日: 2018-12-26
- 发明人: SOGA, Masayuki , ISHII, Yusuke
- 申请人: Sumitomo Chemical Company, Limited
- 申请人地址: 27-1, Shinkawa 2-chome Chuo-ku Tokyo 104-8260 JP
- 专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人: Sumitomo Chemical Company, Limited
- 当前专利权人地址: 27-1, Shinkawa 2-chome Chuo-ku Tokyo 104-8260 JP
- 代理机构: J A Kemp
- 优先权: JP2009243349 20091022; JP2009243351 20091022; JP2010143554 20100624; JP2010143555 20100624
- 国际公布: WO2011049241 20110428
- 主分类号: H01L51/50
- IPC分类号: H01L51/50 ; C07D213/22 ; C07D251/16 ; C07D265/38 ; C08K5/3432 ; C08L65/00
摘要:
An organic electroluminescent device comprising an anode, a cathode, a light emitting layer that is disposed between the anode and the cathode and contains a first light emitting layer material containing a phosphorescent compound and a second light emitting layer material containing a charge transporting polymer compound (that is, a light emitting layer containing a first light emitting layer material and a second light emitting layer material), and a hole transporting layer that is disposed between the anode and the light emitting layer so as to be adjacent to the light emitting layer and is composed of a hole transporting polymer compound, wherein the lowest excitation triplet energy T1 e (eV) of the first light emitting layer material, the lowest excitation triplet energy T1 h (eV) of the second light emitting layer material and the lowest excitation triplet energy T1 t (eV) of the hole transporting polymer compound satisfy the following formulae (A) and (B): An organic electroluminescent device comprising an anode and a cathode, and a hole transporting layer and a light emitting layer disposed between the anode and the cathode, wherein the hole transporting layer contains 1) a mixture of 2,2'-bipyridine and/or 2,2'-bipyridine derivative and a non-2,2'-bipyridinediyl group-containing hole transporting polymer compound, 2) a 2,2'-bipyridinediyl group-containing polymer compound having a constitutional unit composed of an unsubstituted or substituted 2,2'-bipyridinediyl group, and at least one constitutional unit selected from the group consisting of constitutional units composed of a divalent aromatic amine residue and constitutional units composed of an unsubstituted or substituted arylene group, or a combination thereof.
公开/授权文献
- EP2492988A1 ORGANIC ELECTROLUMINESCENT ELEMENT 公开/授权日:2012-08-29
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