发明名称 |
ORGANIC ELECTROLUMINESCENT ELEMENT |
摘要 |
<p>Disclosed is an organic electroluminescent device (organic EL device) which is improved in luminous efficiency, fully secured of high driving stability, and of a simple structure. The organic EL device is constituted of an anode, organic layers containing a phosphorescent light-emitting layer, and a cathode piled one upon another on a substrate and a phosphine oxide derivative represented by general formula (1) is contained in a phosphorescent light-emitting layer, an electron-transporting layer, a hole-blocking layer, or an exciton-blocking layer. In general formula (1), L 1 is a direct bond or an aromatic group with a valence of 1-3 and Ar 1 is an aromatic group. The two Ar 1 groups linked to the same nitrogen atom may form a nitrogen heterocycle and may further form a fused ring together with the said nitrogen heterocycle.</p> |
申请公布号 |
EP2403029(A1) |
申请公布日期 |
2012.01.04 |
申请号 |
EP20100746265 |
申请日期 |
2010.02.25 |
申请人 |
NIPPON STEEL CHEMICAL CO., LTD. |
发明人 |
KAI, TAKAHIRO;TANAKA, HIDEKI;SUDA, MITSURU;YAMAMOTO, TOSHIHIRO;MATSUMOTO, MEGUMI |
分类号 |
H01L51/50;C07F9/58;C07F9/6558;C09K11/06 |
主分类号 |
H01L51/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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