Methods for producing low stress porous low-k dielectric materials using precursors with organic functional groups
First Claim
1. A method of preparing a porous low-k dielectric material on a substrate, the method comprising:
- forming a precursor film on the substrate, the precursor film comprising a porogen and a structure former, wherein the structure former has one or more carbon-carbon double or triple bonds and the porogen has at least one bulky organic functional group and wherein the porogen precursor is a polyfunctional cyclic non-aromatic compound; and
treating the precursor film to facilitate removing the porogen from the precursor film and thereby creating voids within the dielectric material to form the porous low-k dielectric material.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods of preparing a low stress porous low-k dielectric material on a substrate are provided. The methods involve the use of a structure former precursor and/or porogen precursor with one or more organic functional groups. In some cases, the structure former precursor has carbon-carbon double or triple bonds. In other cases, one or both of the structure former precursor and porogen precursor has one or more bulky organic groups. In other cases, the structure former precursor has carbon-carbon double or triple bonds and one or both of the structure former precursor and porogen precursor has one or more bulky organic groups. Once the precursor film is formed, the porogen is removed, leaving a porous low-k dielectric matrix with high mechanical strength. Different types of structure former precursors and porogen precursors are described. The resulting low stress low-k porous film may be used as a low-k dielectric film in integrated circuit manufacturing applications.
-
Citations
30 Claims
-
1. A method of preparing a porous low-k dielectric material on a substrate, the method comprising:
-
forming a precursor film on the substrate, the precursor film comprising a porogen and a structure former, wherein the structure former has one or more carbon-carbon double or triple bonds and the porogen has at least one bulky organic functional group and wherein the porogen precursor is a polyfunctional cyclic non-aromatic compound; and treating the precursor film to facilitate removing the porogen from the precursor film and thereby creating voids within the dielectric material to form the porous low-k dielectric material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A method of preparing a porous low-k dielectric material on a substrate the method comprising:
-
forming a precursor film on the substrate, the precursor film comprising a porogen and a structure former, wherein the porogen has at least one bulky organic functional group and wherein the porogen precursor is a polyfunctional cyclic non-aromatic compound; and treating the precursor film to facilitate removing the porogen from the precursor film and thereby creating voids within the dielectric material to form the porous low-k dielectric material. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
Specification