Patent ID: 6136685
Filing Date: 2000-10-24
Classification: C23C,H01L

Abstract:
A method for forming a film on a substrate having a gap, the method comprising the steps of:(a) flowing a silicon-containing gas, a halogen-containing gas, and oxygen into a chamber at a first flow rate;(b) creating a plasma in said chamber with an RF source generator;(c) applying RF bias power at a first bias power level to said plasma with an RF bias generator;(d) depositing a first portion of the film on the substrate at a first deposition-to-etch ratio, said first portion of the film partially filling the gap in the substrate;(e) increasing said first flow rate of said silicon-containing gas and said halogen-containing gas and said oxygen to a second flow rate;(f) reducing said RF bias power to a second bias power level; and(g) depositing a second portion of the film on the substrate at a second deposition-to-etch ratio wherein said second deposition-to-etch ratio is greater than said first deposition-to-etch ratio, said first and second portions of the film filling the gap in the substrate.