Patent ID: 7259111
Filing Date: 2007-08-21
Classification: C23C,H01L

Abstract:
1. A method of depositing an organosilicate dielectric layer, comprising: positioning a substrate within a processing chamber having a powered electrode; flowing an interface gas mixture from a gas manifold into the processing chamber, the interface gas mixture comprising one or more organosilicon compounds and one or more oxidizing gases; depositing a silicon oxide layer on the substrate by applying a high frequency radio frequency (HFRF) power to the powered electrode, the silicon oxide layer having a carbon concentration less than 3 atomic percent, wherein a distance between the substrate and the gas manifold is varied while applying HFRF power; ramping-up the flow rate of the one or more organosilicon compounds until reaching a final gas mixture while depositing a transition layer on the silicon oxide layer, wherein a DC bias of the powered electrode varies less than 60 volts; flowing the final gas mixture to deposit a carbon doped silicon oxide layer on the transition layer, the carbon doped silicon oxide layer having a carbon concentration of at least 10 atomic percent; and terminating the HFRF power.