Patent ID: 8168545

Claim:
A system for fabricating a wafer-based semiconductor device on a substrate, the system comprising: means for extruding a first dopant bearing paste and a second dopant bearing paste on a surface of the semiconductor substrate such that the first dopant bearing paste forms a first extruded structure on a first surface area of the semiconductor substrate, and such that the second dopant bearing paste forms a second extruded structure on a second surface area of the semiconductor substrate, wherein the first and second surface areas are separated by a third surface area, and wherein the first dopant bearing paste includes a first dopant of a first dopant type, and the second dopant bearing paste includes a second dopant of a second dopant type and means for heating the semiconductor substrate such that the first dopant diffuses through the first surface area into the semiconductor substrate, thereby forming a first doped region, and such that the second dopant diffuses through the second surface area into the semiconductor substrate, thereby forming a second doped region.