Patent ID: 6033541
Filing Date: 2000-03-07
Classification: C23C,H01J,H01L

Abstract:
Apparatus for forming a planarized layer of material on a substrate which includes contact holes having sidewalls that are formed within a surface of the substrate, comprising:a deposition chamber;a sputter target made of a constituent of said material,a platform for holding the substrate;a first power supply connected to the sputter target;a second Power supply connected to the platform;a control module programmed to carry out the following steps:depositing a first thickness of the material onto the surface of the substrate to form deposited material;reverse sputtering the deposited material so as to coat the sidewalls of the contact holes with the deposited material;after the first thickness of said material is deposited onto the surface of the substrate, depositing a second thickness of said material onto the surface of the substrate; andwhile depositing the second thickness of said material onto the surface of the substrate, causing the second power supply to bias the substrate to a positive voltage relative to around so that the substrate is bombarded by electrons thereby heating the substrate to enhance reflow of the material being deposited.