SOLAR BATTERY CELL, SOLAR BATTERY MODULE, AND JOINING METHOD OF LEAD WIRE OF SOLAR BATTERY CELL

A solar battery cell includes: a light-receiving-surface bus electrode; a light receiving surface of a semiconductor substrate; and a long lead wire for extracting electricity. The light-receiving-surface bus electrode extends in a predetermined direction on the light receiving surface of the semiconductor substrate and the long lead wire is overlapped on and joined to the light-receiving-surface bus electrode. The light-receiving-surface bus electrode and the lead wire are respectively provided with mutually engaging, without a gap, convex portions and concave portions on surfaces thereof facing each other to regulate misalignment in a width direction between the light-receiving-surface bus electrode and the lead wire.