Title:
LOW-TEMPERATURE CONDUCTIVE SILVER PASTE FOR HIT SOLAR CELL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/220395
Kind Code:
A1
Abstract:
Disclosed are a low-temperature conductive silver paste for an HIT solar cell and a preparation method therefor. The low-temperature conductive silver paste for a HIT solar cell of the present invention is prepared from the following components in parts by mass: 27-46 parts of a flaked silver powder; 46-65 parts of a spherical silver powder; 1.5-3.5 parts of a thermosetting resin; 0.5-1.5 parts of a reactive diluent; 2-4 parts of an organic solvent; 0.65-0.75 parts of a curing agent; 0.05-0.15 parts of an imidazole curing accelerator; 0.35-0.45 parts of a dispersant; 0.01-0.6 parts of a thixotropic agent; 0-2.4 parts of an epoxy toughening agent; and 0.5-1.5 parts of an ionomer, for 100 parts in total. The low-temperature conductive silver paste of the present invention prepared using the formula can form a bond with a substrate, and has good wettability on the substrate, thus increasing the fill factor of a solar cell, thereby improving the photoelectric conversion efficiency of the solar cell.
Inventors:
ZHU PENG (CN)
WANG YUANYUAN (CN)
CHEN FEN (CN)
WANG YUANYUAN (CN)
CHEN FEN (CN)
Application Number:
PCT/CN2019/086565
Publication Date:
November 05, 2020
Filing Date:
May 13, 2019
Export Citation:
Assignee:
NANTONG T SUN NEW ENERGY CO LTD (CN)
International Classes:
H01B1/22; H01B13/00; H01L31/0224
Foreign References:
| CN108264879A | 2018-07-10 | |||
| CN106085276A | 2016-11-09 | |||
| CN104685002A | 2015-06-03 | |||
| JPS6343041B2 | 1988-08-26 | |||
| CN108598190A | 2018-09-28 | |||
| CN109300574A | 2019-02-01 |
Other References:
See also references of EP 3923300A4
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