Patent ID: 6091021
Filing Date: 2000-07-18
Classification: H01L,Y02E,Y02P

Abstract:
A process for manufacturing silicon solar cells comprising:providing silicon having an emitter region which, according to one boundary dimension of said emitter region, defines a surface of said silicon, and which emitter region is diffused with a dopant;positioning at least one electrical contact on said surface of said silicon so that said at least one electrical contact is adjacent to part of said emitter region;etching at least a portion of said surface of said silicon using plasma whereby said at least one electrical contact masks said part of said emitter region adjacent to which it is positioned, and dopant concentrations in portions of said surface which are not adjacent to said at least one electrical contact are caused to be reduced as compared with dopant concentrations in said part of said emitter region adjacent to which said at least one electrical contact is positioned.