Controlled deposition of silicon-containing coatings adhered by an oxide layer
First Claim
1. A method of controlling the hydrophobicity of a substrate surface by depositing an oxide upon said substrate surface, where said oxide is formed from at least one precursor in a manner which provides control over a density of hydroxyl groups on said oxide surface during deposition of said oxide onto the substrate surface, wherein said oxide is formed on said substrate surface in a process chamber operated at a pressure within the range of about 0.5 Torr to about 30 Torr, wherein said substrate surface temperature during deposition of said oxide ranges from about 15°
- C. and about 80°
C., wherein a precise, specific quantity of each precursor material is charged to said process chamber in a batch-like manner by adding each precursor material into the process chamber in controlled aliquots, and wherein said oxide is formed by reacting a chlorosilane vaporous precursor having at least two chlorine atoms with a water precursor.
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Abstract
We have developed an improved vapor-phase deposition method and apparatus for the application of films/coatings on substrates. The method provides for the addition of a precise amount of each of the reactants to be consumed in a single reaction step of the coating formation process. In addition to the control over the amount of reactants added to the process chamber, the present invention requires precise control over the total pressure (which is less than atmospheric pressure) in the process chamber, the partial vapor pressure of each vaporous component present in the process chamber, the substrate temperature, and typically the temperature of a major processing surface within said process chamber. Control over this combination of variables determines a number of the characteristics of a film/coating or multi-layered film/coating formed using the method. By varying these process parameters, the roughness and the thickness of the films/coatings produced can be controlled.
45 Citations
14 Claims
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1. A method of controlling the hydrophobicity of a substrate surface by depositing an oxide upon said substrate surface, where said oxide is formed from at least one precursor in a manner which provides control over a density of hydroxyl groups on said oxide surface during deposition of said oxide onto the substrate surface, wherein said oxide is formed on said substrate surface in a process chamber operated at a pressure within the range of about 0.5 Torr to about 30 Torr, wherein said substrate surface temperature during deposition of said oxide ranges from about 15°
- C. and about 80°
C., wherein a precise, specific quantity of each precursor material is charged to said process chamber in a batch-like manner by adding each precursor material into the process chamber in controlled aliquots, and wherein said oxide is formed by reacting a chlorosilane vaporous precursor having at least two chlorine atoms with a water precursor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
- C. and about 80°
Specification