Anode structure for use in organic EL device, production method thereof and organic EL device
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United States of America Patent
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Sep 4, 2012
Grant Date -
Dec 22, 2011
app pub date -
Jul 9, 2010
filing date -
Aug 7, 2009
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Abstract
The present invention relates to an anode structure for use in a top-emission type organic EL device which comprises a laminated structure comprising an anode layer made of at least one selected from the group consisting of aluminum, aluminum alloys, silver and silver alloys; and a buffer layer directly provided on the anode layer and made of an electrically conductive amorphous carbon having a hydrogen concentration of 15 at. % or less. According to the present invention, there is provided an anode structure which is superior in alkali resistance and can lengthen lifetime of an organic EL device as well as can ensure a high work function suitable for an anode for a high-luminance, high-power-efficient organic EL device.
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