Nanoparticle multilayer film
AssigneesSamsung Electronics Co., Ltd., Ajou University Industry-Academic Cooperation Foundation
InventorsKyungsang CHO, Sangwook KIM, Donghyeok CHOI
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Abstract
A nanoparticle multilayer thin film is provided in which nanoparticles which are not electrically insulated from each other are spaced apart from one another at a reduced distance. The nanoparticle multilayer film includes: at least one first nanoparticle layer including first nanoparticles that are surface-modified with a cationic metal-chalcogenide compound; and at least one second nanoparticle layer including second nanoparticles that are surface-modified with an anionic metal-chalcogenide compound, wherein the first nanoparticle layer and the second nanoparticle layer are alternately stacked upon one another.
Claims18
A nanoparticle multilayer film comprising:
- at least one first nanoparticle layer comprising first nanoparticles, said first nanoparticles being surface-modified with a cationic metal-chalcogenide compound;
- and
- at least one second nanoparticle layer comprising second nanoparticles, said second nanoparticles being surface-modified with an anionic metal-chalcogenide compound, wherein the first nanoparticle layer and the second nanoparticle layer are alternately stacked upon one another.
A process for forming a nanoparticle multilayer film on an article, comprising:
- providing a first coating dispersion comprising first nanoparticles, said first nanoparticles being surface-modified with a cationic metal-chalcogenide compound and a second coating dispersion comprising second nanoparticles, said second nanoparticles being surface-modified with an anionic metal-chalcogenide compound;
- forming a first nanoparticle layer by applying one of the first or the second coating dispersions onto a surface of the substrate to form a first colloid layer, drying the first colloid layer to form a unwashed first nanoparticle layer, and washing the unwashed first nanoparticle layer to form the first nanoparticle layer;
- and
- forming a second nanoparticle layer by applying the other coating dispersion on the first nanoparticle layer to form a second colloid layer, drying the second colloid layer to form a unwashed second nanoparticle layer, and washing the unwashed second nanoparticle layer to form the second nanoparticle layer.
Dependencies are inferred from the claim text.