US 12,074,233 B2
Metallization of solar cells
Richard Hamilton Sewell, Los Altos, CA (US); David Aaron Randolph Barkhouse, Oakland, CA (US); Junbo Wu, San Jose, CA (US); Michael Cudzinovic, Sunnyvale, CA (US); Paul Loscutoff, Castro Valley, CA (US); Joseph Behnke, San Jose, CA (US); and Michel Arsène Olivier Ngamo Toko, Brussels (BE)
Assigned to Maxeon Solar Pte. Ltd., Singapore (SG)
Filed by Maxeon Solar Pte. Ltd., Singapore (SG)
Filed on Aug. 17, 2021, as Appl. No. 17/404,863.
Application 15/170,786 is a division of application No. 14/137,782, filed on Dec. 20, 2013, granted, now 9,362,427, issued on Jun. 7, 2016.
Application 17/404,863 is a continuation of application No. 15/170,786, filed on Jun. 1, 2016, granted, now 11,127,866.
Prior Publication US 2021/0384366 A1, Dec. 9, 2021
Int. Cl. H01L 31/0224 (2006.01); H01L 31/02 (2006.01); H01L 31/068 (2012.01); H01L 31/0745 (2012.01)
CPC H01L 31/022441 (2013.01) [H01L 31/02008 (2013.01); H01L 31/0682 (2013.01); H01L 31/0745 (2013.01); Y02E 10/547 (2013.01); Y02P 70/50 (2015.11)] 13 Claims
OG exemplary drawing
 
1. A solar cell, comprising:
a first tunnel dielectric layer on a silicon substrate;
an emitter region on the first tunnel dielectric layer;
a second tunnel dielectric layer on the emitter region; and
a conductive contact on the second tunnel dielectric layer, the conductive contact comprising a metal and silicon, and the conductive contact having a lateral width the same as a lateral width of the second tunnel dielectric layer.