Patent ID: 7129109

Claim:
A method for manufacturing a solar cell with a selective emitter layer, comprising the following steps: providing a p-doped semiconductor wafer having a surface, with a front side comprising a light-facing side, and a rear side; forming the selective emitter layer on the light-facing side by: applying an oxide layer on the light-facing side of the p-doped wafer; Structuring the oxide layer, using a screen printing process, wherein a squeegee paste containing an oxide-etching component is printed onto the oxide layer via a pattern stencil and the printed-on squeegee paste is removed again after a predetermined dwell time, to form structured areas; introducing a selective high degree of n-doping in the structured areas; removing the oxide layer; introducing weak n-doping, including over a large part of the surface of the wafer between the structured areas; and contacting of the light-facing side in areas of the selective high degree of n-doping.