PURPOSE: A solar cell bus bar is provided to prevent damage to a solar cell due to the thermal expansion characteristics of a ribbon by generating elasticity corresponding to the expansion and contraction of a ribbon. CONSTITUTION: In a solar cell bus bar, a bus bar(22) is patterned to have a certain width on the surface of a solar cell(20). A bus bar is comprised of a metal paste Expanding parts(22-1) are formed on one end of the bus bar and generates elasticity corresponding to the expansion and contraction of a ribbon. The expanding parts are electrically connected to the bus bar.
