Patent ID: 6916380
Filing Date: 2005-07-12
Classification: C23C,H01L

Abstract:
1. A system for depositing a layered film on a substrate substantially in accordance with a metal organic chemical vapor deposition (MOCVD) process, the system comprising: a chamber adapted to house the substrate and to maintain a controlled environment that includes maintaining a substrate temperature to within 200 degrees to 550 degrees Celsius during deposition, the chamber further adapted to maintain a low pressure in the chamber; an inlet system adapted to introduce reactant gases and organometallic precursors in gas vapor phase to the chamber; and an alternating system comprising mass flow controllers under software control, wherein the software is programmed to maintain the flow of the organometallic precursors in gas vapor phase while selecting among reactant gases to alternate between a reducing reactant gas and an oxidizing reactant gas.