Method and apparatus for cleaning of a CVD reactor
First Claim
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1. An apparatus for cleaning a process chamber, the apparatus comprising:
- i. a remote plasma unit with at least one outlet, the remote plasma unit generating reactive species and supplying the reactive species through the at least one outlet;
ii. a first body with a plurality of inlet holes, the plurality of inlet holes being formed circumferentially around the first body, the plurality of inlet holes introducing the reactive species into the process chamber; and
iii. a first conduit, the first conduit connecting the remote plasma unit to the first body.
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Abstract
The present invention provides a process and an apparatus for remote plasma cleaning of a process chamber of a chemical vapor deposition (CVD) reactor. The reactive species are generated in a remote plasma unit and are introduced into the process chamber through a plurality of inlet holes. The reactive species are free radicals such as oxygen radicals, fluorine radicals, and the like. These reactive species react with the unwanted residues in the process chamber and generate volatile products. The invention also provides a method for controlling the flow rate of the reactive species.
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25 Claims
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1. An apparatus for cleaning a process chamber, the apparatus comprising:
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i. a remote plasma unit with at least one outlet, the remote plasma unit generating reactive species and supplying the reactive species through the at least one outlet; ii. a first body with a plurality of inlet holes, the plurality of inlet holes being formed circumferentially around the first body, the plurality of inlet holes introducing the reactive species into the process chamber; and iii. a first conduit, the first conduit connecting the remote plasma unit to the first body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A process for cleaning a process chamber, the process comprising the steps of:
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i. generating reactive species in a remote plasma unit; ii. supplying the reactive species through at least one outlet of the remote plasma unit; iii. introducing the reactive species into the process chamber through a plurality of inlet holes of a first body, the plurality of inlet holes formed circumferentially around the first body, the first body being connected to the remote plasma unit through a first conduit; iv. reacting the reactive species with residues in the process chamber and generating volatile products; and v. removing the volatile products from the process chamber. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A method for processing a substrate, the method comprising the steps of:
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i. depositing a film on a substrate in a process chamber; ii. unloading the substrate from the process chamber iii. generating reactive species in a remote plasma unit; iv. supplying the reactive species through at least one outlet of the remote plasma unit; v. introducing the reactive species into the process chamber through a plurality of inlet holes of a first body, the plurality of inlet holes formed circumferentially around the first body, the first body being connected to the remote plasma unit through a first conduit; and vi. removing residues from the process chamber, the residues being accumulated during the deposition of the film.
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Specification