Light emitting device including tandem structure
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United States of America Patent
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Jan 9, 2018
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N/A
app pub date -
Mar 11, 2015
filing date -
Sep 14, 2012
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Abstract
A light emitting device comprising: a pair of electrodes; two or more light emitting elements disposed between the electrodes in a stacked arrangement, wherein a light emitting element comprises a layer comprising an emissive material; and a charge generation element disposed between adjacent light emitting elements in the stacked arrangement, the charge generation element comprising a first layer comprising an inorganic n-type semiconductor material, and a second layer comprising a hole injection material. A charge generation element is also disclosed.
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