LASER BEAM SHAPING FOR FOIL-BASED METALLIZATION OF SOLAR CELLS

摘要

Approaches for foil-based metallization of solar cells and the resulting solar cells are described. For example, a method of fabricating a solar cell involves locating a metal foil above a plurality of alternating N-type and P-type semiconductor regions disposed in or above a substrate. The method also involves laser welding the metal foil to the alternating N-type and P-type semiconductor regions. The method also involves patterning the metal foil by laser ablating through at least a portion of the metal foil at regions in alignment with locations between the alternating N-type and P-type semiconductor regions. The laser welding and the patterning are performed at the same time.

主权项

1. A method of fabricating a solar cell, the method comprising:
locating a metal foil above a plurality of alternating N-type and P-type semiconductor regions disposed in or above a substrate; laser welding the metal foil to the alternating N-type and P-type semiconductor regions; and patterning the metal foil by laser ablating through at least a portion of the metal foil at regions in alignment with locations between the alternating N-type and P-type semiconductor regions, the laser welding and the patterning performed at the same time.