COPPER NANOPARTICLE DISPERSION AND METHOD FOR MANUFACTURING ELECTROCONDUCTIVE SUBSTRATE

摘要

Provided is a method for manufacturing an electroconductive substrate with which it is possible to obtain an electroconductive substrate that has exceptional electroconductivity due to being sintered at a low temperature or for a short period of time. The present invention is a method for manufacturing an electroconductive substrate, which has: a step for forming a coating film by coating a base material with a copper nanoparticle dispersion that contains copper nanoparticles, a carboxylic acid, an alkylamine, a polymer dispersing agent, and a solvent; and a step for sintering the coating film. The polymer dispersing agent has one of either an amine value or an acid value of 30-160 mgKOH/g and the other of either the amine value or the acid value at 0-160 mgKOH/g, and the volume-average particle diameter is 500 nm or less as obtained by dynamic light scattering.