Patent ID: 6670542
Filing Date: 2003-12-30
Classification: H01L,Y02E,Y02P

Abstract:
A manufacturing method of a semiconductor device comprisinga) a process for forming an amorphous semiconductor layer substantially not containing impurity for reducing electric resistance on a surface of a first conductive type crystalline semiconductor substrate, b) a process for forming a second conductive type plasma doping layer from the amorphous semiconductor layer of step a), wherein a part of the amorphous semiconductor layer turns into the second conductive type plasma doping layer and another part of the amorphous semiconductor layer is remaining on the first conductive type crystalline semiconductor substrate, said process comprising diffusing impurity on the amorphous semiconductor layer by exposing the amorphous semiconductor layer formed on the crystalline semiconductor substrate in an atmosphere of excited gas containing the second conductive type impurity, and c) a process for forming an amorphous semiconductor thin film layer containing the second conductive type impurity by chemical vapor deposition on the plasma doping layer.