Composite conductive functional silver paste and preparation method thereof

• Main Authors: SHA XIAOLIN, SHA YAN, MA LIGUO
• Format: Patent
• Language: Chinese; English
• Published: 11.03.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

The invention discloses composite conductive functional silver paste and a preparation method thereof. The method comprises the following steps: step 1, selecting raw materials in proportion; the raw materials comprise inorganic oxide powder, flake silver powder, micron silver powder, nano silver powder and an organic carrier; 2, preparing low-melting-point glass powder; step 3, preparing an organic carrier; 4, the flake silver powder and the nanometer silver powder are mixed and stirred to be uniform; step 5, uniformly mixing the prepared glass powder, the mixed silver powder and the organic carrier, grinding to obtain uniformly mixed conductive silver paste, and preparing an electrode plate by using a screen printing process to test the conductivity and bonding performance of the electrode plate; the obtained conductive silver paste is used for solar cells. The invention also provides the composite conductive functional silver paste prepared by the method. The conductivity of the conductive silver paste can