Method for Removal of Carbon From An Organosilicate Material
First Claim
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1. A method for forming a porous organosilicate film comprising:
- providing a composite organosilicate film wherein the composite organosilicate film is deposited from a composition comprising at least one silicon-containing precursor and at least one porogen-containing precursor and wherein the composite organosilicate film comprises carbon-containing species;
exposing the composite organosilicate film to an energy source comprising ultraviolet light; and
treating the composite organosilicate film to a chemical comprising at least one selected from an oxidizer, a fluorinating agent, a methylating agent, a reducing agent, and combinations thereof to remove at least a portion of the carbon-containing species contained therein and provide a porous organosilicate film.
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Abstract
Described herein is a method for removing at least a portion of the carbon-containing species within an organosilicate (OSG) film by treating the OSG film with a chemical, such as but not limited to an oxidizer, exposing the OSG film to an energy source comprising ultraviolet light, or treating the OSG film with a chemical and exposing the OSG film to an energy source.
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Citations
27 Claims
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1. A method for forming a porous organosilicate film comprising:
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providing a composite organosilicate film wherein the composite organosilicate film is deposited from a composition comprising at least one silicon-containing precursor and at least one porogen-containing precursor and wherein the composite organosilicate film comprises carbon-containing species; exposing the composite organosilicate film to an energy source comprising ultraviolet light; and treating the composite organosilicate film to a chemical comprising at least one selected from an oxidizer, a fluorinating agent, a methylating agent, a reducing agent, and combinations thereof to remove at least a portion of the carbon-containing species contained therein and provide a porous organosilicate film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for forming a porous organosilicate film comprising:
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forming via vapor deposition a composite organosilicate film from a composition comprising at least one silicon-containing precursor and at least one porogen-containing precursor wherein the composite organosilicate film comprises carbon-containing species; treating the composite organosilicate film to a chemical to remove at least a portion of the carbon-containing species contained therein; and exposing the composite organosilicate film to an energy source comprising ultraviolet light and optionally thermal energy to remove at least a portion of the carbon-containing species contained therein and provide the porous organosilicate film. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A method for forming a porous organosilicate film comprising:
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providing a composite organosilicate film wherein the composite organosilicate film comprises carbon-containing species, a first dielectric constant, and a first hardness; treating the composite organosilicate film to a chemical comprising an oxidizer to remove at least a portion of the carbon-containing species therein; and exposing the composite organosilicate film to an energy source comprising ultraviolet light to remove at least a portion of the carbon-containing species therein and provide the porous organosilicate film comprising a second dielectric constant and a second hardness wherein the second dielectric constant is substantially the same as or less than the first dielectric constant and wherein the second hardness is greater than the first hardness. - View Dependent Claims (24)
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25. A porous organosilicate film comprising:
- a dielectric constant ranging from 1.2 to 2.5 and an extinction coefficient of the film measured at 240 nm by ellipsometer ranging from 0 to 0.03
- View Dependent Claims (26, 27)
Specification