To provide a solar battery in which energy conversion efficiency is improved.

A paste material for the solar battery is a paste material used when a p+-layer 4, a counter electrode 3 or a photodetective surface electrode 5 are formed on one surface side of a silicon (Si) substrate 1. The paste material for the solar battery contains aluminum (Al) and powder of Al-Si alloy in which the weight ratio of silicon (Si) to aluminum (Al) is 5% or more and 50% or less as the main component, and also contains organic solvent as the remaining component. When the p+-layer 4, the counter electrode 3 or the photodetective surface electrode 5 is formed on the surface of the silicon (Si) substrate 1 according to one method for manufacturing the solar battery, the paste material including the powder of Al-Si alloy is applied and then the substrate is dried and annealed to form the p+-layer 4, the counter electrode 3 or the photo detective surface electrode 5.

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