US 12,349,499 B2
Conductive paste composition, preparation method and use thereof, crystalline silicon solar cell
Paul Douglas VerNooy, Hockessin, DE (US); and Qijie Guo, Hainesport, NJ (US)
Assigned to Solamet Electronic Materials (Dongguan) Co., Ltd., Guangdong (CN); and Solamet Materials Science Co., Ltd., Jiangsu (CN)
Appl. No. 17/996,349
Filed by Jiangsu Solamet Electronic Materials Co., Ltd., Jiangsu (CN)
PCT Filed Mar. 10, 2022, PCT No. PCT/CN2022/080059
§ 371(c)(1), (2) Date Oct. 16, 2022,
PCT Pub. No. WO2023/115716, PCT Pub. Date Jun. 29, 2023.
Claims priority of application No. 202111558682.4 (CN), filed on Dec. 20, 2021.
Prior Publication US 2024/0234602 A1, Jul. 11, 2024
Int. Cl. H10F 77/164 (2025.01); C03C 4/14 (2006.01); C03C 8/10 (2006.01); C03C 8/18 (2006.01); H10F 10/14 (2025.01); H10F 77/20 (2025.01)
CPC H10F 77/1642 (2025.01) [C03C 4/14 (2013.01); C03C 8/10 (2013.01); C03C 8/18 (2013.01); H10F 10/14 (2025.01); H10F 77/211 (2025.01)] 17 Claims
OG exemplary drawing
 
1. A conductive paste composition, comprising:
a lead-boron-selenium glass frit accounting for 0.5 wt % to 10 wt % of a total solid in the conductive paste composition; wherein based on a total weight of a dry weight of the lead-boron-selenium glass frit, the lead-boron-selenium glass frit at least contains lead-boron-selenium oxides with 51 wt % to 82 wt % of PbO, 4 wt % to 20 wt % of B2O3, and 1 wt % to 16 wt % of SeO2; the lead-boron-selenium oxides contained in the lead-boron-selenium glass frit are completely amorphous; or a first part of the lead-boron-selenium oxides contained in the lead-boron-selenium glass frit is amorphous, and a second part of the lead-boron-selenium oxides is crystalline, a content of the second part in the lead-boron-selenium glass frit accounts for less than 1.5% of a total weight of lead-boron-selenium oxides;
a conductive component accounting for 87 wt % to 99 wt % of the total solid;
an aluminum elemental component accounting for 0.5 wt % to 3 wt % of the total solid; and
an organic medium.