Patent ID: 6737123
Filing Date: 2004-05-18
Classification: C23C,H01L,Y02E,Y02P

Abstract:
A silicon-based film formation process comprising feeding a source gas into a vacuum reactor, and applying a high-frequency power to a high-frequency power feed section installed in the vacuum reactor, to cause plasma to take place to form a silicon-based film by chemical vapor deposition on a substrate placed on an electrode provided at a position opposing the high-frequency power feed section and grounded electrically,wherein the film is formed superimposing a direct-current potential on the high-frequency power to set the potential of the high-frequency power feed section to a potential which is lower by V1 than the ground potential, the V1 satisfying the following expression: |V2|&lE;|V1|&lE;50Ã—|V2|, where V2 is the potential difference from the ground potential, produced in the electrode in the state the plasma has taken place under the same conditions except that the direct-current potential is not superposed on the high-frequency power and the electrode is brought into a non-grounded state.