Patent ID: 6203623
Filing Date: 2001-03-20
Classification: C23C

Abstract:
A method for cleaning a chemical reaction chamber that attracts wall deposition during a semiconductor processing procedure, the method comprising the steps of:providing a chemical reaction chamber used for semiconductor processing, the chemical reaction chamber having an input and output means and wherein chemical deposits are present on walls of the chemical reaction chamber;providing an acidic cleaning chemical selected from the a group consisting of HF, HCl and H.sub.3 PO.sub.4 ;transforming said acidic cleaning chemical into an aerosol state;feeding the aerosol of said acidic cleaning chemical into the chemical reaction chamber by a carrier gas through said input means of the chemical reaction chamber; andcausing a reaction between said aerosol of said acidic cleaning chemical and the chemical deposits present on said walls, such that said chemical deposits are stripped off of said walls of the chemical reaction chamber.