Title:
CONDUCTIVE PASTE FOR SEMICONDUCTOR ELEMENT, PREPARATION METHOD THEREOF AND PERC SOLAR CELL
Document Type and Number:
WIPO Patent Application WO/2021/016863
Kind Code:
A1
Abstract:
Conductive paste for a semiconductor element, a preparation method thereof and a solar cell. The conductive paste comprises the following raw materials in parts by weight of 100 parts: 80.0-93.0 parts of metal powder; 6.0-15.0 parts of organic carrier; 0.5-5.0 parts of oxide etchant; the oxide etchant contains Fe2O3, SiO 2 and Na 2O; on the basis of 100 mole parts of the oxide etchant, Fe 2O 3:SiO 2=0.1:40-25:10; and Na 2O:SiO 2=0.1:40-10:10. The conductive paste shows excellent etching performance when being sintered at a temperature of less than or equal to 700℃, so that the metal powder forms a good ohmic contact with silicon on the surface of a PERC crystalline silicon solar cell, thereby reducing the resistance of a front electrode, and obtaining the front electrode with low contact resistance, good conductivity and strong adhesive force. The resulting PERC crystalline silicon solar cell is greatly improved in performance.
Inventors:
LIU XIAOLI (CN)
XU CHENG (CN)
LI DELIN (CN)
XU CHENG (CN)
LI DELIN (CN)
Application Number:
PCT/CN2019/098380
Publication Date:
February 04, 2021
Filing Date:
July 30, 2019
Export Citation:
Assignee:
SOLTRIUM ADVANCED MATERIALS TECH LTD SHENZHEN (CN)
International Classes:
H01L31/0224
Foreign References:
| CN104692668A | 2015-06-10 | |||
| CN104798209A | 2015-07-22 | |||
| CN105679400A | 2016-06-15 | |||
| US20130099177A1 | 2013-04-25 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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