US 12,426,403 B2
Solar cell and method for preparing same, photovoltaic module and power consuming device
Yanfen Wang, Fujian (CN); Shuojian Su, Fujian (CN); Yandong Wang, Fujian (CN); Weile Lin, Fujian (CN); Hanfang Li, Fujian (CN); Xiangling Lin, Fujian (CN); Changmao Wang, Fujian (CN); Guodong Chen, Fujian (CN); and Yongsheng Guo, Fujian (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Jun. 9, 2023, as Appl. No. 18/207,690.
Application 18/207,690 is a continuation of application No. PCT/CN2022/073519, filed on Jan. 24, 2022.
Prior Publication US 2023/0317862 A1, Oct. 5, 2023
Int. Cl. H10F 19/90 (2025.01); H10F 71/00 (2025.01); H10F 77/00 (2025.01); H10F 77/20 (2025.01); B60L 8/00 (2006.01)
CPC H10F 77/935 (2025.01) [H10F 19/90 (2025.01); H10F 71/00 (2025.01); H10F 77/211 (2025.01); B60L 8/003 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A solar cell having a plurality of sub-cells on a substrate, each of the plurality of sub-cells comprising a first electrode layer, a photovoltaic conversion module, and a second electrode layer that are sequentially stacked along a thickness direction of the sub-cell, the second electrode layer comprising a main body portion and a connection portion electrically connected to the main body portion, the connecting portion including a part formed on a surface of the first electrode layer facing away from the substrate in a hollow-out portion and another part extending from the part in the thickness direction in contact with a side surface of the photoelectric conversion module, and the connection portion of one of the plurality of sub-cells being configured to be electrically connected to the first electrode layer of another sub-cell, such that the plurality of sub-cells are electrically connected,
wherein a thickness of the main body portion is greater than that of the part of the connection portion formed on the surface of the first electrode layer facing away from the substrate in the hollow-out portion;
a ratio of the thickness of the main body portion to that of the connection portion is denoted by A, and 1<A≤10;
each of the plurality of sub-cells comprises a barrier layer for blocking transport of first charges, and the barrier layer is disposed between the photovoltaic conversion module and the main body portion;
a ratio of a thickness of the barrier layer to that of the main body portion is denoted by C, and 0.01≤C≤0.2; and
the second electrode layer comprises a first material and a second material, the first material is provided on a side of the photovoltaic conversion module that faces away from the first electrode layer to form a first film layer, the second material is provided in the hollowed-out portion and a side of the first film layer that faces away from the first electrode layer to form a second film layer, and the first material is different from the second material.