公开(公告)号：US11817512B2

公开(公告)日：2023-11-14

申请号：US17751446

申请日：2022-05-23

申请人： Maxeon Solar Pte. Ltd.

发明人： Taeseok Kim ,  Gabriel Harley ,  John Wade Viatella ,  Périne Jaffrennou

IPC分类号： H01L31/0224 ,  H01L31/18 ,  B23K26/364 ,  B23K26/354 ,  H01L31/05 ,  H01L31/0745 ,  H01L21/60

CPC分类号： H01L31/022441 ,  B23K26/354 ,  B23K26/364 ,  H01L31/0516 ,  H01L31/0745 ,  H01L31/182 ,  H01L2021/60292 ,  Y02E10/50

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.