Electroconductive aluminium-dispersed paste, manufacturing method of solar cell and solar cell

• Main Authors: NOJIMA TAKESHI, SETA TSUTOMU, HIRATA RIEKO
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2014
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; CONDUCTORS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention relates to an electroconductive aluminium-dispersed paste, a manufacturing method of a solar cell and a solar cell. The invention can provide an electroconductive aluminium-dispersed paste whose printing and coating performance is excellent and formed back electrode has a low surface resistance value and which can fully inhibit the occurrence of warping of a sintered silicon semiconductor substrate. The abovementioned paste is an electroconductive aluminium-dispersed paste used for forming an electrode on a back side of a silicon semiconductor, the silicon semiconductor is one having a pn junction and having a reflection preventing layer formed on a surface side of the silicon semiconductor. The paste is characterized by containing aluminium powder, glass powder, a dispersing agent and an organic solvent, wherein the dispersing agent is a segmented copolymer containing basic groups and acidic groups, and the amine value of the segmented copolymer is 2 to 100mgKOH/g, and the acid value is 10 to 3