Method of preparing opto-electronic device
AssigneeCambridge Display Technology Limited
InventorsJonathan Halls, Richard Wilson, Jeremy Burroughes
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Abstract
A method is provided to produce an opto-electronic device comprising a substrate, a first electrode layer, a second electrode layer of opposite polarity to said first electrode layer, any interlayers and, between said first and second electrode layers, a first functional material in interfacial contact with a second functional material, wherein the first functional material has the structure of a laterally porous film and the second functional material is a film disposed over and interpenetrating with the film of the first functional material.
Claims25
A method of preparing an opto-electronic device comprising a substrate, a first electrode layer, a second electrode layer of opposite polarity to said first electrode layer, and, between said first and second electrode layers, a first functional material in interfacial contact with a second functional material, said method comprising:
- forming the first electrode layer on the substrate;
- depositing a blend of a first forming material and a curable first functional material on said first electrode layer on said substrate to form a film, the first forming material and first functional material being selected to separate into a laterally phase separated film structure wherein the first forming material phase optionally contains islands of the first functional material phase;
- treating said laterally phase separated film structure so as to cure said first functional material phase followed by removing the first forming material phase and said optionally contained islands of the first functional material phase, or removing the first forming material phase and said optionally contained islands of the first functional material phase from said laterally phase separated film structure followed by treating so as to cure said first functional material phase, to leave a cured, laterally porous film of said first functional material;
- depositing a second functional material over and into the pores of said cured, laterally porous film of the first functional material, so as to provide a film of the second functional material over and interpenetrating with the film of the first functional material;
- and
- forming the second electrode layer over said film of the second functional material.
A method of preparing an opto-electronic device comprising a substrate, a first electrode layer, a second electrode layer of opposite polarity to said first electrode layer and, between said first and second electrode layers, a first functional material in interfacial contact with a second functional material, said method comprising:
- forming the first electrode layer on the substrate;
- depositing a blend of a first forming material and a second forming material on said first electrode layer on said substrate to form a film, the first forming material and second forming material being selected to separate into a laterally phase separated film structure wherein the first forming material phase optionally contains islands of the second forming material phase;
- removing the first forming material phase and said optionally contained islands of the second forming material phase, to leave a laterally porous film of said second forming material;
- depositing a curable first functional material over and into the pores of said laterally porous film of the second forming material, so as to provide a film of the first functional material over and interpenetrating with the film of the second forming material;
- treating said interpenetrating films of the second forming and first functional materials so as to cure said first functional material phase followed by removing the second forming material and any uncured portions of the first functional material, or removing the second forming material and any uncured portions of the first functional material from said interpenetrating films of the second forming and first functional materials followed by treating so as to cure said first functional material phase, to leave a cured, laterally porous film of said first functional material;
- depositing a second functional material over and into the pores of said cured, laterally porous film of the first functional material, so as to provide a film of the second functional material over and interpenetrating with the film of the first functional material;
- and
- forming the second electrode layer over said film of the second functional material.
Dependencies are inferred from the claim text.