Method for front end of line fabrication
First Claim
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1. A method for removing native oxides from a substrate surface, comprising:
- supporting a substrate in a processing chamber;
generating reactive species from a gas mixture within the processing chamber;
cooling the substrate to a first temperature within the processing chamber;
directing the reactive species to the cooled substrate to react with the native oxides thereon while forming a film on the substrate, wherein the reactive species are flowed through a gas distribution plate comprising a heating element coupled with the gas distribution plate;
positioning the substrate in close proximity to the gas distribution plate; and
heating the substrate to a second temperature of about 100°
C. or greater within the processing chamber to sublimate the film.
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Abstract
A method for removing native oxides from a substrate surface is provided. In at least one embodiment, the method includes supporting the substrate surface in a vacuum chamber and generating reactive species from a gas mixture within the chamber. The substrate surface is then cooled within the chamber and the reactive species are directed to the cooled substrate surface to react with the native oxides thereon and form a film on the substrate surface. The substrate surface is then heated within the chamber to vaporize the film.
294 Citations
20 Claims
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1. A method for removing native oxides from a substrate surface, comprising:
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supporting a substrate in a processing chamber; generating reactive species from a gas mixture within the processing chamber; cooling the substrate to a first temperature within the processing chamber; directing the reactive species to the cooled substrate to react with the native oxides thereon while forming a film on the substrate, wherein the reactive species are flowed through a gas distribution plate comprising a heating element coupled with the gas distribution plate; positioning the substrate in close proximity to the gas distribution plate; and heating the substrate to a second temperature of about 100°
C. or greater within the processing chamber to sublimate the film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for removing native oxides from a substrate surface within a processing chamber, comprising:
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generating a plasma of reactive species in a first section of the processing chamber; cooling the substrate having the native oxides thereon to a first temperature in a second section of the processing chamber; flowing the reactive species from the first section to the second section to react with the cooled substrate and forming a film thereon, wherein the reactive species is flowed through a gas distribution plate; heating the gas distribution plate; moving the substrate to a third section of the chamber; and heating the substrate to a second temperature within a range from about 100°
C. to 150°
C. in the third section of the chamber to sublimate the film. - View Dependent Claims (16, 17, 18)
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19. A method for removing native oxides from a substrate within a processing chamber, comprising:
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cooling the substrate to a first temperature at about 22°
C. or less;generating a plasma of reactive species comprising nitrogen and fluorine atoms; flowing the plasma of reactive species through a gas distribution plate; exposing the substrate to the reactive species and forming a film comprising the nitrogen and fluorine atoms on the cooled substrate; and annealing the substrate at a second temperature of about 100°
C. or greater to sublimate the film. - View Dependent Claims (20)
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Specification