Patent ID: 6123992
Filing Date: 2000-09-26
Classification: C23C,H01L

Abstract:
A method of forming an aluminum-based layer mainly including aluminum on a surface of an insulating layer and within a hole formed in said insulating layer, said method comprising the steps of:carrying out a chemical vapor deposition to deposit said aluminum-based layer on said surface of said insulating layer and also to incompletely fill said hole to not less than 75% by volume of the hole by use of a source including at least one of alkyl groups and hydrogen so that a surface of said aluminum-based layer is terminated by said at least one of alkyl groups and hydrogen included in said source, and so that said surface of said aluminum-based layer is free of any natural oxide film; andcarrying out a heat treatment, without formation of any natural oxide film on said surface of said aluminum-based layer, for causing a re-flow of said aluminum-based layer, whereby said at least one of alkyl groups and hydrogen promotes a migration of aluminum atoms on said surface of said aluminum-based layer.