Patent ID: 11949037
Assignee: MAXEON SOLAR PTE. LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A method of fabricating a solar cell, the method comprising:
providing a substrate having a continuous intervening layer thereon;
locating a metal foil over the continuous intervening layer; and
exposing the metal foil to a laser beam to form a conductive path through the continuous intervening layer and to form a conductive contact structure electrically connected to the substrate by the conductive path and to leave remaining unexposed metal foil, wherein the conductive contact structure includes a metal portion of the metal foil, the metal portion of the conductive contact structure connected to the remaining unexposed metal foil by a weakened structure of the metal foil, the weakened structure of the metal foil including patterning;
subsequent to exposing the metal foil to the laser beam, separating and removing less than an entirety of the remaining unexposed metal foil by separating a portion of the remaining unexposed metal foil from the metal portion along the weakened structure and to leave remaining the weakened structure of the metal foil including the patterning and to leave portions of the remaining unexposed metal foil that overhang outermost edges of the substrate.