Patent ID: 6468829
Filing Date: 2002-10-22
Classification: H01L,Y02E,Y02P

Abstract:
A method for the manufacture of a P-I-N type semiconductor device which is comprised of a body of substantially intrinsic semiconductor material disposed between a body of P type semiconductor material and a body of N type semiconductor material, said method comprising the steps of:providing a first, doped body of semiconductor material of a first conductivity type; providing a deposition apparatus having a deposition region defined therein; providing a process gas which includes a precursor of said substantially intrinsic semiconductor material therein; subjecting said process gas to activating energy which decomposes said process gas into deposition species; contacting said first, doped body of semiconductor material with said deposition species in said deposition region so that said deposition species deposit said body of substantially intrinsic semiconductor material onto said first, doped body at an average deposition rate N; depositing a second, doped body of semiconductor material of a second conductivity type, opposite said first conductivity type, upon said body of substantially intrinsic semiconductor material so that said second, doped body of semiconductor material is separated from said first, doped body of semiconductor material by said body of substantially intrinsic semiconductor material; and controlling the rate at which said deposition species deposits said body of substantially intrinsic semiconductor material onto said first, doped body so that a portion of said body of substantially intrinsic semiconductor material which is disposed closest to its interface with said P type semiconductor material, and which comprises at least 10% of the thickness of said body of substantially intrinsic semiconductor material is deposited at a deposition rate which is less than N.