Methodology for in-situ doping of aluminum coatings
First Claim
1. A chemical vapor deposition process for the in-situ preparation of conformal copper-doped aluminum coatings on a substrate in a chemical vapor deposition (CVD) reactor comprising:
- a. generating a first flow of a first reactant vapor directed to said substrate in said reactor, said first reactant vapor comprising a copper source precursor;
b. heating said substrate to a temperature sufficient to decompose said first reactant vapor and form, directly on a surface of the substrate, a copper layer having a thickness of less than 10 nm;
c. generating a second flow of a second reactant vapor directed to said substrate in said reactor, said second reactant vapor consisting of an aluminum source precursor, and optionally, a carrier gas;
d. heating said substrate to a temperature higher than 185°
C. to decompose said second reactant vapor and form a copper-doped aluminum film.
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Abstract
A chemical vapor deposition process for the in-situ preparation of conformal copper-doped aluminum coatings on a substrate comprises the steps of generating a first flow of a first reactant vapor directed to the substrate in the reactor, the first reactant vapor including a copper source precursor; heating the substrate to a temperature sufficient to decompose the first reactant vapor and form an ultrathin copper seed layer; generating a second flow of a second reactant vapor directed to the substrate in the reactor, the second reactant vapor including an aluminum source precursor; and heating the substrate to a temperature higher than 185° C. to decompose the second reactant vapor and form a copper-doped aluminum film.
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Citations
26 Claims
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1. A chemical vapor deposition process for the in-situ preparation of conformal copper-doped aluminum coatings on a substrate in a chemical vapor deposition (CVD) reactor comprising:
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a. generating a first flow of a first reactant vapor directed to said substrate in said reactor, said first reactant vapor comprising a copper source precursor;
b. heating said substrate to a temperature sufficient to decompose said first reactant vapor and form, directly on a surface of the substrate, a copper layer having a thickness of less than 10 nm;
c. generating a second flow of a second reactant vapor directed to said substrate in said reactor, said second reactant vapor consisting of an aluminum source precursor, and optionally, a carrier gas;
d. heating said substrate to a temperature higher than 185°
C. to decompose said second reactant vapor and form a copper-doped aluminum film.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A chemical vapor deposition process for the in-situ preparation of conformal, copper-doped aluminum coatings on a substrate in a chemical vapor deposition (CVD) reactor comprising the steps of:
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a. heating said substrate to a temperature of 225-300°
C.;
b. generating a flow of first reactant vapor directed to said substrate in said reactor, said first reactant vapor including a copper source precursor chosen from copper N,N′
-dimethylketenimidate, copper (II) hexafluoroacetylacetonate, or copper (I) trimethylvinylsilane;
c. decomposing said first reactant vapor and depositing, directly on a surface of the substrate, a conformal copper layer with thickness of less than 10 nanometers;
d. generating a flow of second reactant vapor directed to said substrate in said reactor, said second reactant vapor consisting of an aluminum source precursor chosen from dimethylethylaluminum alane and dimethylaluminum hydride, and optionally, a carrier gas; and
e. decomposing said second reactant vapor and depositing a conformal copper-containing aluminum film over said copper layer. - View Dependent Claims (26)
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Specification