High-efficiency flexible thin film solar cell

The invention discloses a high-efficiency flexible thin film solar cell. A back electrode is arranged on one end of a thinned epitaxial substrate and bonded on a flexible thin film substrate; an epitaxial structure is arranged on the other side of the thinned epitaxial substrate; an ohmic contact layer is arranged on the epitaxial structure; a front grid line electrode is arranged on the ohmic contact layer; the ohmic contact layer is selectively etched and an antireflection film is arranged on the etched region. The high-efficiency flexible thin film solar cell is high in conversion efficiency, good in reliability and excellent in flexibility, and further is reduced in weight.