Transparent electrical conductors prepared from sorted carbon nanotubes and methods of preparing same
First Claim
Patent Images
1. A colored transparent conductive film comprising:
- an average transmittance of greater than about 75% in the visible spectrum;
a sheet resistance of less than about 1.0×
103 Ω
/square; and
a visible color, the visible color essentially one color selected from colors of the visible spectrum, said selected visible color transmitted;
wherein the film comprises single-walled carbon nanotubes having a mean diameter with a diameter variance for differential wavelength absorption in the visible spectrum to provide the visible color of the film.
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Abstract
Various methods related to the preparation of transparent electrical conductors based on carbon nanotubes having enhanced optical and electrical properties are disclosed. In some embodiments, the methods involve employing carbon nanotubes that have been presorted according to electronic type and/or optical absorbance for use in transparent electrical conductors. Other embodiments involve use of carbon nanotube bundles that have been pre-sorted according to bundle density.
118 Citations
20 Claims
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1. A colored transparent conductive film comprising:
-
an average transmittance of greater than about 75% in the visible spectrum; a sheet resistance of less than about 1.0×
103 Ω
/square; anda visible color, the visible color essentially one color selected from colors of the visible spectrum, said selected visible color transmitted; wherein the film comprises single-walled carbon nanotubes having a mean diameter with a diameter variance for differential wavelength absorption in the visible spectrum to provide the visible color of the film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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- 10. A colored transparent conductive film comprising single-walled carbon nanotubes, wherein greater than about 50% of the single-walled carbon nanotubes are metallic, the film with an average transmittance of greater than about 75% in the visible spectrum and having a visible color, the visible color essentially one color selected from colors of the visible spectrum, said selected visible color transmitted.
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15. A colored transparent conductive film comprising single-walled carbon nanotubes, wherein greater than about 80% of the single-walled carbon nanotubes are metallic, the film having a visible color and a sheet resistance of less than about 1.0×
- 103 Ω
/square, the visible color essentially one color selected from colors of the visible spectrum, said selected visible color transmitted. - View Dependent Claims (16, 17, 18, 19, 20)
- 103 Ω
Specification