Electrode wire for solar battery

摘要

[Object] An electrode wire for a solar cell is provided, which is less liable to cause cracks in a solar cell semiconductor substrate during soldering and has excellent electrical conductivity. [Solving Means] The solar cell electrode wire according to the present invention includes a core material (2) having a volume resistivity of not greater than 2.3µ©·cm and a proof strength of not less than 19.6MPa and not greater than 85MPa, and a hot-dip solder plating layer (3A) (3B) disposed on a surface of the core material (2). The core material (2) is preferably an annealed pure copper material having an oxygen content of not higher than 20ppm. The core material (2) may be a clad material including an interlayer of aluminum and copper layers disposed on opposite surfaces of the interlayer.