Solar cell conductor and method of manufacturing the same

摘要

A solar cell conductor includes an additive element including at least one of Mg, Zr, Nb, Ca, V, Ni, Mn, Ti and Cr, more than 2 mass ppm of oxygen, pure copper including an inevitable impurity, a 0.2 % proof stress value of not more than 55 MPa, and an elongation percentage of not less than 25 %. A method of manufacturing a solar cell conductor includes making a molten metal by melting a dilute copper alloy material at a copper melting temperature of not less than 1100 °C and not more than 1320 °C, the dilute copper alloy material including more than 2 mass ppm of oxygen and an additive element, forming a wire rod from the molten metal, hot-rolling the wire rod at a temperature of not more than 880 °C and not less than 550 °C, and forming a conductor by drawing the hot-rolled wire rod.