Organic light emissive device comprising a trilayer cathode including a layer comprising sodium fluoride
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United States of America Patent
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Mar 17, 2015
Grant Date -
Apr 17, 2014
app pub date -
Dec 18, 2013
filing date -
May 9, 2008
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Abstract
A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV.
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