Method for producing electronic device and coating solutions suitable for the production method
It is intended to provide a method for producing an electronic device having a multilayer structure by a coating method, and a coating solution suitable for the production method. The present invention provides a method for producing an electronic device having at least two or more stacked layers containing organic matter, comprising a first step of applying a coating solution containing organic matter and a metal and/or a metal oxide onto a substrate either directly or via an additional layer to form a mixed layer, and a second step of directly applying a solution containing organic matter onto the mixed layer formed in the first step to form an organic layer. According to this method, an electronic device having a multilayer structure can be produced easily by a convenient coating method.
1. A method for producing an organic electroluminescent device, in which at least two layers containing an organic matter are stacked between a pair of electrodes, at least one of which is indium-tin oxide (ITO), the method comprising:
coating a coating solution A directly on one electrode of the ITO so as to produce a first layer,
wherein the coating solution A includes:
an organic solvent;
an organic matter having one selected from a hole injection material, a hole transport material, a hole injection/transport material, an electron injection materials, an electron transport materials, and an electron injection/transport materials; and
an inorganic matter having at least one selected from Sn, In, tin oxide, indium oxide, and ITO, and
coating directly on the first layer a solution B that includes a luminescent material and an organic solvent, so as to produce a second layer.