Organic light emissive device comprising a trilayer cathode including a layer comprising sodium fluoride
US8981365B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 18, 2013 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Dec 18, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.