ORGANIC ELECTROLUMINESCENT DEVICE
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United States of America Patent
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Issued Date -
May 5, 2016
app pub date -
May 19, 2014
filing date -
Jun 12, 2013
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Abstract
An organic electroluminescent (EL) device having high efficiency, low driving voltage and a long lifetime is provided by combining various materials for an organic EL device, which are excellent, as materials for an organic EL device having high efficiency and high durability, in hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state and durability, so as to allow the respective materials to effectively reveal their characteristics. In the organic EL device having at least an anode, a hole injection layer, a first hole transport layer, a second hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the second hole transport layer includes an arylamine compound represented by the following general formula (1).
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