US 12,408,476 B2
Foil-based metallization of solar cells
Gabriel Harley, Mountain View, CA (US); Taeseok Kim, Pleasanton, CA (US); Richard Hamilton Sewell, Los Altos, CA (US); Michael Morse, San Jose, CA (US); David D. Smith, Campbell, CA (US); Matthieu Moors, Braine-le-Chateau (FR); and Jens-Dirk Moschner, Heverlee (BE)
Assigned to Maxeon Solar Pte. Ltd., Singapore (SG)
Filed by Maxeon Solar Pte. Ltd., Singapore (SG)
Filed on Mar. 18, 2024, as Appl. No. 18/608,788.
Application 18/608,788 is a continuation of application No. 16/841,541, filed on Apr. 6, 2020, granted, now 11,967,657.
Application 16/841,541 is a continuation of application No. 16/118,203, filed on Aug. 30, 2018, granted, now 10,615,296, issued on Apr. 7, 2020.
Application 16/118,203 is a continuation of application No. 15/485,840, filed on Apr. 12, 2017, granted, now 10,090,421, issued on Oct. 2, 2018.
Application 15/485,840 is a continuation of application No. 14/954,030, filed on Nov. 30, 2015, granted, now 9,627,566, issued on Apr. 18, 2017.
Application 14/954,030 is a continuation of application No. 14/229,716, filed on Mar. 28, 2014, granted, now 9,231,129, issued on Jan. 5, 2016.
Prior Publication US 2024/0222534 A1, Jul. 4, 2024
Int. Cl. H10F 77/20 (2025.01); H10F 10/14 (2025.01); H10F 10/165 (2025.01); H10F 19/20 (2025.01); H10F 19/90 (2025.01); H10F 77/122 (2025.01); H10F 77/70 (2025.01)
CPC H10F 77/219 (2025.01) [H10F 10/146 (2025.01); H10F 10/165 (2025.01); H10F 19/20 (2025.01); H10F 19/906 (2025.01); H10F 19/908 (2025.01); H10F 77/122 (2025.01); H10F 77/223 (2025.01); H10F 77/703 (2025.01); Y02E 10/50 (2013.01); Y02E 10/547 (2013.01); Y02P 70/50 (2015.11)] 20 Claims
OG exemplary drawing
 
1. A solar cell, comprising:
a substrate;
a first semiconductor region in the substrate;
a second semiconductor region in the substrate;
a first metal seed material region on the first semiconductor region;
a second metal seed material region on the second semiconductor region, wherein the second metal seed region is laterally spaced apart from the first metal seed region; and
an anodized metal foil on the first metal seed material region and the second metal seed material region, the anodized metal foil comprising a first conductive portion laterally separated from a second conductive portion by a groove, and the anodized metal foil comprising an oxide layer along a bottom of the metal foil, along sides of the metal foil, and along a top of the metal foil.