Contact structure for solar cell

A solar cell (100) includes a substrate (110), a first electrode layer (120) formed on the substrate (110), an intermediate layer (133) formed on the first electrode layer (120), and a light-absorbing layer (140) formed on the intermediate layer (133). A contact wire (160) is attached to the intermediate layer (133) in an area, where the intermediate layer (133) is not covered by the light-absorbing layer (140). The thickness of the intermediate layer (133) is reduced in the wire contact area (131) to improve the series resistance of the composite electrode layer (120) and (133).