Light-emitting element
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsDaisuke Kumaki, Satoshi Seo
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AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsDaisuke Kumaki, Satoshi Seo
Estimating the term…
In the present invention, a light-emitting element operating at low driving voltage, consuming low power, emitting light with good color purity and manufactured in high yields can be obtained. A light-emitting element is disclosed with a configuration composed of a fist layer containing a light-emitting material, a second layer, a third layer are formed sequentially over an anode to be interposed between the anode and a cathode in such a way that the third layer is formed to be in contact with the cathode. The second layer is made from n-type semiconductor, a mixture including that, or a mixture of an organic compound having a carrier transporting property and a material having a high electron donor property. The third layer is made from p-type semiconductor, a mixture including that, or a mixture of an organic compound having a carrier transporting property and a material having a high electron acceptor property.
A light-emitting element comprising:
A light-emitting element comprising:
Dependencies are inferred from the claim text.