Growing graphene on substrates
First Claim
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1. An uncatalyzed method of growing graphitic carbon on a substrate, comprising:
- depositing a hydrocarbon layer directly on a silicon containing substrate from a precursor comprising a linear conjugated hydrocarbon and a solvent;
evaporating the solvent before applying energy to the hydrocarbon layer; and
forming a graphitic layer from the hydrocarbon layer by applying energy to the hydrocarbon layer.
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Abstract
Embodiments described herein provide methods and apparatus for forming graphitic carbon such as graphene on a substrate. The method includes providing a precursor comprising a linear conjugated hydrocarbon, depositing a hydrocarbon layer from the precursor on the substrate, and forming graphene from the hydrocarbon layer by applying energy to the substrate. The precursor may include template molecules such as polynuclear aromatics, and may be deposited on the substrate by spinning on, by spraying, by flowing, by dipping, or by condensing. The energy may be applied as radiant energy, thermal energy, or plasma energy.
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20 Claims
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1. An uncatalyzed method of growing graphitic carbon on a substrate, comprising:
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depositing a hydrocarbon layer directly on a silicon containing substrate from a precursor comprising a linear conjugated hydrocarbon and a solvent; evaporating the solvent before applying energy to the hydrocarbon layer; and forming a graphitic layer from the hydrocarbon layer by applying energy to the hydrocarbon layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An uncatalyzed method of forming graphene on a substrate, comprising:
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providing a precursor comprising a linear unsaturated hydrocarbon, an aromatic hydrocarbon, and benzene; directly depositing molecules from the precursor on the silicon containing substrate; and reacting the molecules to form graphene by applying energy to the molecules. - View Dependent Claims (17)
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18. An uncatalyzed method of forming graphene on a substrate, comprising:
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depositing a hydrocarbon layer on a silicon containing substrate from a precursor comprising a linear conjugated hydrocarbon and a solvent; evaporating the solvent before applying energy to the hydrocarbon layer; and forming a graphene layer from the hydrocarbon layer by applying energy to the hydrocarbon layer using a staged UV exposure, wherein the staged UV exposure comprises; exposing the hydrocarbon layer to UV energy in a first exposure operation; and exposing the hydrocarbon layer to the UV energy in a second exposure operation after the first exposure operation. - View Dependent Claims (19, 20)
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Specification