Organic electroluminescence device
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United States of America Patent
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Sep 13, 2011
Grant Date -
Sep 6, 2007
app pub date -
Mar 2, 2007
filing date -
Mar 6, 2006
priority date (Note) -
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Abstract
An organic electroluminescence device of multi-photon emission mode which includes plural light emission layers and at least one charge generation layer between a pair of electrodes, arranged in a film thickness direction thereof, wherein the charge generation layer includes at least one p-doped layer and at least one n-doped layer, and further includes an alkali metal layer and a layer containing a hole transport material between the p-doped layer and the n-doped layer. An organic electroluminescence device of multi-photon emission mode exhibiting little unevenness in luminance even in a large-area format electroluminescence device is provided.
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