Patent ID: 6514803
Filing Date: 2003-02-04
Classification: H01L

Abstract:
A method of producing a thin film semiconductor device, comprising the steps ofintroducing chlorine gas and a gas comprising a silane into a deposition chamber; under low pressure conditions, reacting said chlorine gas and said gas comprising said silane together on a substrate surface to deposit an amorphous layer comprising amorphous silicon and chlorine on said substrate surface, wherein the concentration of chlorine in said amorphous layer is 1Ã—1017 to 5Ã—1021 atom/cm3; producing a gate insulation layer on said amorphous layer by oxidizing a surface of said amorphous layer, wherein the concentration of chlorine in said gate insulation layer is 2Ã—1017 to 2Ã—1021 atom/cm3; heating said substrate surface having said amorphous layer deposited thereon to effect solid phase growth to said amorphous layer to produce an activated layer comprising crystallized silicon and chlorine; producing a gate electrode on said gate insulation layer; producing a drain region and a source region in said activated layer; and producing a source electrode contacting said source region and a drain electrode contacting said drain region, to produce a thin film semiconductor device.