Methods for forming a carbon nanotube-graphene hybrid film on a substrate

Patent metadata

Field	Value
Publication number	US-9887361-B2
Application number	US-201514820028-A
Country	US
Kind code	B2
Filing date	Aug 6, 2015
Priority date	Nov 22, 2011
Publication date	Feb 6, 2018
Grant date	Feb 6, 2018

Abstract

A nanotube-graphene hybrid film and method for forming a cleaned nanotube-graphene hybrid film. A method includes depositing nanotube film over a metal foil to produce a layer of nanotube film, placing the metal foil with as-deposited nanotube film in a chemical vapor deposition furnace to grow graphene on the nanotube film to form a nanotube-graphene hybrid film, and transferring the nanotube-graphene hybrid film over a substrate.

First claim

What is claimed is:

1. A method for forming a carbon nanotube-graphene hybrid film on a substrate, comprising:
depositing carbon nanotubes over a metal foil to produce a carbon nanotube film;
placing the metal foil with as-deposited carbon nanotube film in a chemical vapor deposition furnace to grow graphene on the carbon nanotube film to form a carbon nanotube-graphene hybrid film; and
transferring the carbon nanotube-graphene hybrid film over a substrate.

2. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil to produce a carbon nanotube film comprises forming a self-assembled monolayer of an amine terminated group over a copper foil and depositing the carbon nanotubes from an aqueous solution.

3. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil to produce a carbon nanotube film comprises depositing the carbon nanotubes over copper foil from an organic solvent.

4. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil to produce a carbon nanotube film comprises spraying a carbon nanotube solution on the metal foil and allowing the solution to dry.

5. The method of claim 1 , wherein placing the metal foil with as-deposited carbon nanotube film in a chemical vapor deposition furnace to grow graphene comprises saturating copper atoms with a carbon gas at a temperature that causes formation of graphene.

6. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil comprises performing a vacuum filtration process.

7. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil comprises performing a spray deposition of the carbon nanotubes over the metal foil.

8. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil comprises drop casting a carbon nanotube solution onto the metal foil.

9. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil comprises performing a chemical vapor deposition growth process.

10. The method of claim 1 , wherein depositing carbon nanotubes over a metal foil comprises performing a water-surfactant solution based carbon nanotube deposition process.

11. The method of claim 1 , further comprising removing impurities from a surface of the carbon nanotube film.

12. The method of claim 11 , wherein said removing impurities from a surface of the carbon nanotube film comprises annealing the carbon nanotube film under reduced pressure to remove any dried solvent.

13. A method for forming a nanotube-graphene hybrid film on a substrate, comprising:
depositing nanotubes over a metal foil to produce a nanotube film;
placing the metal foil with as-deposited nanotube film in a chemical vapor deposition furnace to grow graphene on the nanotube film to form a nanotube-graphene hybrid film;
removing impurities from a surface of the nanotube-graphene hybrid film; and
transferring the nanotube-graphene hybrid film over a substrate.

14. The method of claim 13 , wherein said removing impurities from a surface of the nanotube-graphene hybrid film comprises using an acid, solvent and water cleaning technique.

15. The method of claim 13 , wherein said removing impurities from a surface of the nanotube-graphene hybrid film comprises annealing the nanotube-graphene hybrid film under reduced pressure to remove any dried solvent.

16. A method for forming a nanotube-graphene hybrid film on a substrate, comprising:
depositing nanotubes over a metal foil to produce a nanotube film, wherein the nanotube film comprises a network of single wall carbon nanotubes;
placing the metal foil with as-deposited nanotube film in a chemical vapor deposition furnace to grow graphene on the nanotube film to form a nanotube-graphene hybrid film; and
transferring the nanotube-graphene hybrid film over a substrate.

Assignees

• IBM
• Egypt Nanotechnology Center

Inventors

• Bol Ageeth A
• Chandra Bhupesh
• Kasry Amal
• Maarouf Ahmed
• Martyna Glenn J
• Tulevski George S

Classifications

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• B82Y10/00

  Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic · CPC title

• Y10S977/75

  Single-walled · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• Y10T428/30

  Self-sustaining carbon mass or layer with impregnant or other layer · CPC title