Patent ID: 6335288
Filing Date: 2002-01-01
Classification: C23C,H01J,H01L,Y10S

Abstract:
A method for depositing a dielectric film on a substrate in a process chamber, the method comprising:(a) providing a first gaseous mixture to the process chamber, the first gaseous mixture comprising a first deposition gas and a first inert gas source; (b) generating a first high-density plasma from the first gaseous mixture to deposit a first portion of the film on the substrate with a first deposition/sputter ratio within the range of 5-20, wherein the first deposition/sputter ratio is defined as a ratio of a sum of a first net deposition rate and a first blanket sputtering rate to the first blanket sputtering rate; (c) thereafter, cooling the substrate; (d) thereafter, flowing an etchant gas into the process chamber; (e) thereafter, providing a second gaseous mixture to the process chamber, the second gaseous mixture comprising a second deposition gas and a second inert gas source; and (f) generating a second high-density plasma from the second gaseous mixture to deposit a second portion of the film on the substrate, wherein the step of generating a second high-density plasma is performed with a second deposition/sputter ratio within the range of 5-20, wherein the second deposition/sputter ratio is defined as a ratio of a sum of a second net deposition rate and a second blanket sputtering rate to the second blanket sputtering rate.