发明申请
- 专利标题： ELECTROLUMINESCENT DEVICES
- 专利标题（中）： 电致发光器件
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申请号： US12520560申请日： 2007-12-04
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公开(公告)号： US20100025671A1公开(公告)日： 2010-02-04
- 发明人: Poopathy Kathirgamanathan , Arumugam Parheepan , Muttulingam Kumaraverl , Subramaniam Ganeshamurugan , Sivagnanasundram Surendrakumar
- 申请人： Poopathy Kathirgamanathan , Arumugam Parheepan , Muttulingam Kumaraverl , Subramaniam Ganeshamurugan , Sivagnanasundram Surendrakumar
- 申请人地址： DE Damstadt
- 专利权人： Merck Patent GmbH
- 当前专利权人： Merck Patent GmbH
- 当前专利权人地址： DE Damstadt
- 优先权： GB0625541.8 20061222
- 国际申请： PCT/GB07/50737 WO 20071204
- 主分类号： H01L51/54
- IPC分类号： H01L51/54 ; H01L51/56
摘要：
The invention relates to an optical light emitting diode device having an electroluminescent layer and an electron transport layer, wherein the electron transport layer contains zirconium or hafnium quinolate for slowing loss of luminance at a given current density with increase of the time for which the device has been operative. The invention also relates to OLEDs, improved efficiency and/or lifetime is obtained by using zirconium or hafnium quino late as electron transport material.
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