US 2011/0217455 A1 · Large-area transparent conductive coatings including alloyed carbon nanotubes and nanowire composites, and methods of making the same

Abstract

Certain example embodiments of this invention relate to large-area transparent conductive coatings (TCCs) including carbon nanotubes (CNTs) and nanowire composites, and methods of making the same. The σdc/σopt ratio of such thin films may be improved via stable chemical doping and/or alloying of CNT-based films. The doping and/or alloying may be implemented in a large area coating system, e.g., on glass and/or other substrates. In certain example embodiments, a CNT film may be deposited and then doped via chemical functionalization and/or alloyed with silver and/or palladium. Both p-type and n-type dopants may be used in different embodiments of this invention. In certain example embodiments, silver and/or other nanowires may be provided, e.g., to further decrease sheet resistance. Certain example embodiments may provide coatings that approach, meet, or exceed 90% visible transmission and 90 ohms/square target metrics.

Claims23

Dependent claims

A method of making a coated article comprising a substrate supporting a carbon nanotube (CNT) inclusive thin film, the method comprising:

providing a CNT-inclusive ink;
applying the ink to the substrate to form an intermediate coating;
providing a material over the intermediate coating to improve adhesion to the substrate;
preparing a solution of PdCl2;
exposing the intermediate coating to the solution of PdCl2 so that the Pd nucleates at junctions within the intermediate coating, thereby reducing porosity in the intermediate coating in forming the CNT-inclusive thin film;
and
applying an overcoat or passivation layer over the intermediate coating following the exposing.

4 more elements

Dependencies are inferred from the claim text.

Large-area transparent conductive coatings including alloyed carbon nanotubes and nanowire composites, and methods of making the same

Life of this patent

Large-area transparent conductive coatings including alloyed carbon nanotubes and nanowire composites, and methods of making the same

Life of this patent

Abstract

Claims23