Organic light emissive device comprising a trilayer cathode including a layer comprising sodium fluoride

摘要

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.

主权项

1. An organic light emissive device comprising:
a substrate; an anode disposed on the substrate; a cathode disposed over the anode; and an organic light emissive layer between the anode and the cathode, wherein the cathode consists of a trilayer structure, the trilayer structure consisting of: a first layer comprising NaF; a second layer disposed on the first layer and comprising Al, wherein the second layer has a thickness in the range of 20-500 nm; and a third layer disposed on the second layer and comprising Ag, wherein the third layer has a thickness in the range of 20-500 nm.