Vapor phase growth method
DCFirst Claim
1. A method of plasma chemical vapor deposition for forming a film on a substrate, comprising the steps of:
- disposing the substrate in a reaction chamber having a pair of electrodes;
introducing reactive gases into the reaction chamber; and
simultaneously applying a plurality of electric power sources of different frequencies to the pair of electrodes to excite the reactive gases which are transformed into a plasma, the plurality of electric power sources of different frequencies including a first electric power source having a first frequency and a second electric power source having a second frequency, the first frequency providing a high deposition rate relative to the second frequency, the second frequency producing a reduced number of pinholes in the film relative to the first frequency; and
depositing the film, having the reduced number of pinholes, on the substrate from the plasma generated by simultaneously applying the plurality of electric sources of different frequencies.
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Abstract
A plasma chemical vapor deposition method for forming a film on a substrate which is placed on one of a pair of electrodes oppositely arranged within the reaction chamber of a reactor. A plurality of power generators of different frequencies are applied to the electrodes to excite reactive gases introduced into the reaction chamber, whereby the reactive gases are transformed into a plasma and a desired film is formed on the substrate. Film with a small number of pinholes was formed at a relatively high deposition rate by combinations of power generator frequencies of, for example, 13.56 MHz and 1 MHz, 13.56 MHz and 50 KHz, and 5 MHz and 400 KHz.
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Citations
3 Claims
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1. A method of plasma chemical vapor deposition for forming a film on a substrate, comprising the steps of:
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disposing the substrate in a reaction chamber having a pair of electrodes; introducing reactive gases into the reaction chamber; and simultaneously applying a plurality of electric power sources of different frequencies to the pair of electrodes to excite the reactive gases which are transformed into a plasma, the plurality of electric power sources of different frequencies including a first electric power source having a first frequency and a second electric power source having a second frequency, the first frequency providing a high deposition rate relative to the second frequency, the second frequency producing a reduced number of pinholes in the film relative to the first frequency; and depositing the film, having the reduced number of pinholes, on the substrate from the plasma generated by simultaneously applying the plurality of electric sources of different frequencies. - View Dependent Claims (2, 3)
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Specification