Organic light-emitting element
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United States of America Patent
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Mar 26, 2019
Grant Date -
Jan 26, 2017
app pub date -
Jun 10, 2016
filing date -
Jul 21, 2015
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Abstract
An organic light-emitting element is provided, including: an anode; a first hole assisting layer and a second hole assisting layer sequentially formed on the anode; a light-emitting layer formed on and in contact with the second hole assisting layer, the light-emitting layer including a host luminesce containing a compound having a carbazole group; at least one electron transport layer formed on the light-emitting layer; and a cathode formed on the electron transport layer, the second hole assisting layer including a hole transport compound represented by formula (I) to improve the performance of the organic light-emitting element.
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