NOVELTY - A thin-film solar cell (10) consists of a surface electrode (2) consisting of a transparent conductive film, a photoelectric conversion semiconductor layer (3), and a back surface electrode (4), formed on substrate (1). The film surface of the zinc-oxide film at the side of the semiconductor layer has a corrugated structure (22a), in a laminate of the transparent conductive film having indium-oxide film (21) doped with titanium and zinc-oxide film (22) doped with aluminum and gallium, from the translucent-substrate side.    USE - Thin-film solar cell.    ADVANTAGE - The thin-film solar cell has excellent photoelectric conversion efficiency, high transmittance with respect to near-infrared region, and low resistance.    DETAILED DESCRIPTION - A thin-film solar cell consists of a surface electrode consisting of a transparent conductive film, a photoelectric conversion semiconductor layer consisting of a sequential laminate of a p-type semiconductor layer (31), an i-type semiconductor layer (32), and an n-type semiconductor layer (33), and a back surface electrode equipped with an optically reflective metal electrode, formed sequentially on a translucent substrate. The film surface of the zinc-oxide film at the side of the semiconductor layer has a corrugated structure, in a laminate of the transparent conductive film having indium-oxide film doped with titanium and zinc-oxide film doped with aluminum and gallium, from the translucent-substrate side. An INDEPENDENT CLAIM is included for surface electrode.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the thin-film solar cell. (Drawing includes non-English language text)    Translucent substrate (1)    Surface electrode (2)    Photoelectric conversion semiconductor layer (3)    Back surface electrode (4)    Thin-film solar cell (10)    Indium-oxide film (21)    Zinc-oxide film (22)    Corrugated structure (22a)    P-type semiconductor layer (31)    I-type semiconductor layer (32)    N-type semiconductor layer (33)    Optically reflective metal electrode (42)