ORGANIC LIGHT EMITTING DEVICE AND METHOD
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United States of America Patent
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Issued Date -
Mar 20, 2014
app pub date -
Apr 2, 2012
filing date -
Apr 1, 2011
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Abandoned
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Abstract
An organic light-emitting device comprises an anode; a hole injection layer in contact with the anode; a light-emitting layer over the hole injection layer; and a cathode over the light-emitting layer, wherein the hole injection layer comprises an organic semiconductor material doped with a partially fluorinated fullerene such as C60. The dopant is present in the range of about 0.1-20 wt %, optionally 0.1-5 wt %. The organic semiconductor is preferably a polymer comprising repeat units of formula (I):
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