Patent ID: 6770552
Filing Date: 2004-08-03
Classification: H01L

Abstract:
A method of forming at least one feature of a semiconductive material, said method comprising:forming at least one initial feature of a semiconductive material, said at least one initial feature having sidewalls and an upper surface; forming a dielectric layer adjacent to a portion of said sidewalls, said dielectric layer covering less than all of said sidewalls and defining an exposed portion of said sidewalls of said at least one initial feature, wherein forming the dielectric layer comprises: blanket-depositing a dielectric material so as to cover all of the sidewalls and the upper surface of said at least one initial feature; polishing the dielectric material so as to expose the upper surface of said at least one initial feature; and partially removing the remaining dielectric layer so as to expose a portion of the sidewalls of said at least one initial feature, wherein partially removing said dielectric layer comprises anisotropically etching the remaining dielectric layer; epitaxially growing a layer of a semiconductive material on the upper surface and the exposed portion of the sidewalls of said at least one initial feature so as to form at least one final feature of a semiconductive material having an upper portion extending beyond the sidewalls of said initial feature; and removing said dielectric layer so as to expose substantially all the sidewalls of said initial feature.