Patent ID: 6110821
Filing Date: 2000-08-29
Classification: C23C,H01L

Abstract:
A method for forming a refractory metal silicide in the bottom of an opening adjacent to a layer of silicon in situ comprisinga) providing a sputtering chamber having a target of a silicide-forming metal material, a coil mounted between the target and a heated biased substrate support having a gas line therethrough;b) sputtering a metal material from the target while maintaining power to the coil;c) shutting off the power to the target and passing a gas through the substrate support to the backside of the substrate; andd) powering the target and the coil and continuing to sputter deposit the metal material while passing the gas to the backside of the substrate to heat the substrate above the reaction temperature between the metal material and silicon to form a metal silicide in situ.