Patent ID: 6733830
Filing Date: 2004-05-11
Classification: C07F,C23C,H01L,Y10T

Abstract:
A thermal chemical vapor deposition process for depositing a Si-containing material on a surface, comprisingproviding a chemical vapor deposition chamber having disposed therein a substrate, introducing a gas to said chamber, wherein said gas is comprised of a chemical precursor, depositing a Si-containing film onto said substrate by thermal chemical vapor deposition, wherein said Si-containing film has a dielectric constant of less than 3.0, as deposited, and wherein said chemical precursor is selected from the group consisting of siloxanes of the formula (R3Si)2O where each R is independently H, D, F, methyl, ethyl or propyl, (fluoroalkyl)fluorosiloxanes of the formula [((Rf)3-x-yR1xFy)Si]2O where Rf is a perfluoromethyl, perfluoroethyl or perfluoropropyl group, R1 is H or D, x is 0 or 1, y is 1 or 2, x+y=1 or 2, (fluoroalkyl)silanes of the formula (Rf)4-aSiR1a where Rf is a perfluoromethyl, perfluoroethyl or perfluoropropyl group, R1 is H or D, and a is 0, 1, 2, or 3, (alkyl)fluorosilanes of the formula R24-bSiFb where R2 is methyl, ethyl or propyl, and b is 1, 2, or 3, (fluoroalkyl)fluorosilanes of the formula (Rf)4-c-bSiR1cFb where Rf is a perfluoromethyl, perfluorethyl or perfluoropropyl group, R1 is H or D, c is 0, 1, or 2, b is 1, 2, or 3, and c+b=1, 2, or 3, alkysiloxysilanes of the formula (R3SiO)4-bSiRb where each R is independently H, D, F, methyl, ethyl or propyl, and b is 1, 2 or 3, alkoxysilanes of the formula (R2O)4-aSiR1a where R2 is methyl, ethyl or propyl, R1 is H or D, and a is 0, 1, 2, or 3, alkylalkoxysilanes of the formula (R2O)4-c-bSiR2bR1c where each R2 is independently methyl, ethyl or propyl, R1 is H or D, c is 0, 1, or 2, b is 1, 2, or 3, and c+b=1, 2, or 3, silylmethanes of the formula (H3Si)4-aCR1a where R1 is H or D, and a is 0, 1, 2, or 3, alkoxysilylmethanes of the formula (R2O)4-c-b(H3Si)bCR1c where R2 is methyl, ethyl or propyl, R1 is H or D, c is 0, 1, or 2, b is 1, 2, or 3, and c+b=1, 2, or 3, alkylalkoxysilylmethanes of the formula (R2O)4-x-y-zR2z(H3Si)yCR1x where each R2 is independently methyl, ethyl or propyl, R1 is H or D, x is 0 or 1, y is 1 or 2, z is 1 or 2, and x+y+z=2 or 3, alkoxymethanes of the formula (R3O)4-aCR1b where R3 is methyl, ethyl, propyl, or t-butyl, R1 is H or D, and a is 0, 1, 2, or 3, alkylalkoxymethanes of the formula (R3O)4-c-bR2bCR1c where R3 is methyl, ethyl, propyl, or t-butyl, R2 is methyl, ethyl or propyl, R1 H or D, c is 0, 1, or 2, b is 1, 2, or 3, and c+b=1, 2, or 3, and mixtures thereof.