Apparatus and method for cleaning a bell jar in a barrel epitaxial reactor
First Claim
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1. A method of cleaning an epitaxial deposition apparatus comprising:
- increasing the surface temperature of a bell jar in said epitaxial deposition apparatus to a first predetermined temperature range;
measuring the air flow temperature within an exhaust plenum of said epitaxial deposition apparatus;
introducing a reactive gas capable of reacting at said first predetermined temperature range with material deposited on the inside surface of said bell jar and forming gaseous by-products; and
maintaining the temperature of said bell jar surface at said first predetermined temperature range for a time sufficient to allow said material deposited on said inside surface of said bell jar to be removed.
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Abstract
An epitaxial cleaning apparatus has a blower controller module and controller module code. The blower controller module is connected between a blower of an epitaxial deposition device having a reaction chamber, a blower and a plurality of plenum chambers for delivering cooling air from the blower to the reaction chamber, and a blower power source for controlling the speed of the blower. The controller module code for controlling the blower controller module is installed within a control module connected to the epitaxial deposition device for controlling the operation of the epitaxial deposition device
34 Citations
8 Claims
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1. A method of cleaning an epitaxial deposition apparatus comprising:
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increasing the surface temperature of a bell jar in said epitaxial deposition apparatus to a first predetermined temperature range;
measuring the air flow temperature within an exhaust plenum of said epitaxial deposition apparatus;
introducing a reactive gas capable of reacting at said first predetermined temperature range with material deposited on the inside surface of said bell jar and forming gaseous by-products; and
maintaining the temperature of said bell jar surface at said first predetermined temperature range for a time sufficient to allow said material deposited on said inside surface of said bell jar to be removed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification