Patent ID: 6841141
Filing Date: 2005-01-11
Classification: B08B,C23C,H01J

Abstract:
1. A method for in-situ generation of fluorine radicals and/or fluorine-containing interhalogen compounds for use in cleaning a semiconductor processing chamber, comprising the steps of: (a) providing a fluorine source for supplying fluorine gas; (b) providing a halogen source for supplying at least one halogen species selected from the group consisting of Cl wherein said method is characterized by at least one of the following sequences (I), (II), and (III) of steps: (I) (i) flowing the fluorine gas and the halogen species from said respective sources therefor into the semiconductor processing chamber communicatively connected with said sources, without any intervening holdup of said fluorine gas and halogen species between the respective sources and the semiconductor processing chamber; and (II) (i) providing a diluent gas source for supplying at least one inert gas; (III) (i) flowing the fluorine gas and the halogen species into a mixing chamber communicatively connected with the fluorine source and the halogen source;