Organic electroluminescent device
AssigneeMitsubishi Chemical Corporation
InventorsYoshiharu Sato, Hideki Sato
Life of this patent
Estimating the term…
Abstract
An organic electroluminescent device comprising an anode, an organic luminescent layer, an electron transport layer and a cathode formed in this order on a substrate, wherein said electron transport layer contains an electron-transporting material and an alkaline metal, at least a part of said alkaline metal is dispersed in said electron transport layer in the form of cation, and said cathode is made of silver or silver alloy.
Claims23
An organic electroluminescent device comprising an anode, an organic luminescent layer, an electron transport layer and a cathode formed in this order on a substrate, wherein
- said electron transport layer contains an electron-transporting material and an alkaline metal,
- at least a part of said alkaline metal is dispersed in said electron transport layer in the form of cation,
- and said cathode is made of silver or silver alloy.
An organic electroluminescent device comprising an anode, an anode buffer layer, a hole transport layer, an organic luminescent layer, a hole blocking layer, an electron transport layer and a cathode formed in this order on a substrate, wherein
- said electron transport layer comprises an electron-transporting material and an alkaline metal,
- at least a part of said alkaline metal is dispersed in said electron transport layer in the form of cation, and said cathode comprises silver or a silver alloy.
A process for the preparation of an organic electroluminescent device comprising:
- a step of co-evaporating an alkaline metal obtained by reducing a compound containing an alkaline metal and an electron-transporting material in a metal deposition machine to form an electron transport layer.
Dependencies are inferred from the claim text.