US 12,457,820 B2
Solar cell, method for manufacturing the same, photovoltaic device, and photovoltaic system
Hong Chen, Changzhou (CN); Yifeng Chen, Changzhou (CN); Di Liu, Changzhou (CN); and Wenxing Du, Changzhou (CN)
Assigned to TRINA SOLAR CO., LTD., Changzhou (CN)
Filed by TRINA SOLAR CO., LTD., Changzhou (CN)
Filed on Oct. 24, 2023, as Appl. No. 18/383,154.
Claims priority of application No. 202310644865.0 (CN), filed on Jun. 2, 2023.
Prior Publication US 2024/0055540 A1, Feb. 15, 2024
Int. Cl. H10F 77/20 (2025.01); H10F 71/00 (2025.01); H10F 77/30 (2025.01); H10F 77/70 (2025.01)
CPC H10F 77/211 (2025.01) [H10F 71/129 (2025.01); H10F 77/334 (2025.01); H10F 77/707 (2025.01)] 10 Claims
OG exemplary drawing
 
1. A solar cell, comprising:
a substrate including opposing first and second surfaces and a plurality of side surfaces adjacent to and between the first and second surfaces;
a doped conducting layer and a first passivation layer sequentially stacked on and only covering the first surface;
an anti-reflection layer stacked on the first passivation layer, the anti-reflection layer covering the first surface to at least cover the first passivation layer;
a passivation contact layer stacked on and only entirely covering the second surface, the passivation contact layer including a tunnel oxide layer and a doped polysilicon conductive layer sequentially stacked on and only entirely covering the second surface; and
a second passivation layer stacked on the passivation contact layer, the second passivation layer covering the second surface to at least cover the passivation contact layer;
wherein the anti-reflection layer further covers at least part of the plurality of side surfaces, and the anti-reflection layer further covers at least part of the second surface, the at least part of the second surface being adjacent to the at least part of the plurality of side surfaces; a part of the anti-reflection layer is stacked on the passivation contact layer; the second passivation layer covers at least part of the anti-reflection layer on the second surface, a part of the second passivation layer is stacked on the anti-reflection layer, the part of the anti-reflection layer is sandwiched between the passivation contact layer and the second passivation layer, and the part of the anti-reflection layer is directly in contact with a surface of the passivation contact layer away from the second surface.