ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC EL LIGHTING AND ORGANIC EL DISPLAY DEVICE
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United States of America Patent
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Jul 17, 2014
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Jan 17, 2012
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Abstract
The organic electroluminescent element of the invention comprises a cathode, an anode, and a light emitting layer between the cathode and the anode, wherein the light emitting layer comprises, in the order from the side of the anode: a layer containing an charge transport material and a phosphorescent-light emitting material of a low-molecular compound, in which the layer is formed by a wet film forming method; and a layer containing an charge transport material and a fluorescent-light emitting material of a low-molecular compound, in which the layer is formed by a vacuum deposition method, wherein the organic electroluminescent element has a specific emission spectrum.
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