US 12,328,967 B2
Solar cell and solar cell panel including same
Jungmin Ha, Seoul (KR); Juhwa Cheong, Seoul (KR); Youngsung Yang, Seoul (KR); and Kyungdong Lee, Seoul (KR)
Assigned to SHANGRAO XINYUAN YUEDONG TECHNOLOGY DEVELOPMENT CO. LTD, Jiangxi Province (CN)
Appl. No. 17/615,167
Filed by SHANGRAO XINYUAN YUEDONG TECHNOLOGY DEVELOPMENT CO. LTD, Jiangxi Province (CN)
PCT Filed Apr. 8, 2020, PCT No. PCT/KR2020/004767
§ 371(c)(1), (2) Date Nov. 30, 2021,
PCT Pub. No. WO2020/242043, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 10-2019-0064720 (KR), filed on May 31, 2019.
Prior Publication US 2022/0238731 A1, Jul. 28, 2022
Int. Cl. H10F 77/20 (2025.01); H10F 10/14 (2025.01); H10F 19/80 (2025.01); H10F 19/90 (2025.01); H10F 71/00 (2025.01); H10F 77/00 (2025.01); H10F 77/30 (2025.01); H10F 77/70 (2025.01)
CPC H10F 77/219 (2025.01) [H10F 10/146 (2025.01); H10F 19/908 (2025.01); H10F 77/935 (2025.01); H10F 19/80 (2025.01); H10F 19/902 (2025.01); H10F 71/00 (2025.01); H10F 77/315 (2025.01); H10F 77/703 (2025.01)] 19 Claims
OG exemplary drawing
 
1. A solar cell panel comprising:
a solar cell including a semiconductor substrate, a plurality of first and second conductivity type regions positioned in the semiconductor substrate or on the semiconductor substrate, and a plurality of first and second electrodes electrically connected to the plurality of first and second conductivity type regions and extended in a first direction;
a wiring portion including a plurality of first wiring members electrically connected to the plurality of first electrodes and extended in a second direction intersecting the first direction, and a plurality of second wiring members electrically connected to the plurality of second electrodes and extended in the second direction;
a plurality of insulating members positioned in overlap portions of the plurality of first electrodes and the plurality of second wiring members and overlap portions of the plurality of second electrodes and the plurality of first wiring members;
a sealing member surrounding the solar cell, the plurality of insulating members, and the wiring portion;
a first cover member positioned on the sealing member and on one surface of the solar cell; and
a second cover member positioned on the sealing member and on other surface of the solar cell,
wherein at least one of the first and second electrodes includes a main electrode portion and a connection electrode portion positioned on the main electrode portion, with an intermetallic compound (IMC) layer sandwiched between the main electrode portion and the connection electrode portion in which a metal included in the main electrode portion and a second metal included in the connection electrode portion are mixed, the intermetallic compound layer is a compound layer in which a nickel-vanadium (Ni—V) alloy and tin (Sn) are mixed, the main electrode portion has a lamination structure, and extended in the first direction, the intermetallic compound layer is directly in contact with the main electrode portion and the connection electrode portion, and the intermetallic compound layer has a thickness ranging from 20 nm to 500 nm,
wherein the connection electrode portion includes a particle connection layer formed by connecting a plurality of particles including a first metal, and a cover layer that includes the second metal different from the first metal and covers at least an outer surface of the particle connection layer, and
wherein the plurality of particles each have a substantially spherical shape, and the outer surface of the particle connection layer has a shape of a curved surface having a plurality of concave parts corresponding to the substantially spherical shape.