NOVELTY - The solar cell comprises a first absorber layer (10) such as a p-type semiconductor layer, and a second absorber layer (12). The first absorber layer contains a Ib group element, a IIIb group element, and a VIb group element, and includes a peak of luminescence whose half width is 1-15 meV in a photoluminescence spectrum or a cathodoluminescence spectrum. The second absorber layer contains a Ib group element, a IIIb group element, and a VIb group element, and is provided on a side of a light entering surface of the first absorber layer.    USE - Used as a thin film type solar cell.    ADVANTAGE - The solar cell can be easily manufactured with high conversion efficiency, good carrier transport properties and increased open-circuit voltage.    DETAILED DESCRIPTION - The solar cell comprises a first absorber layer (10) such as a p-type semiconductor layer, and a second absorber layer (12). The first absorber layer contains a Ib group element, a IIIb group element, and a VIb group element, and includes a peak of luminescence whose half width is 1-15 meV in a photoluminescence spectrum or a cathodoluminescence spectrum. The second absorber layer contains a Ib group element, a IIIb group element, and a VIb group element, and is provided on a side of a light entering surface of the first absorber layer. A composition ratio of the Ib group element to the IIIb group element in the second absorber layer is 0.1-1.0. The composition ratio of the Ib group element to the IIIb group element contained in the first absorber layer is 1. The Ib group element and IIIb group element contained in the second absorber layer are same as the Ib group element and IIIb group element contained in the first absorber layer. A thickness of the second absorber layer is 1-100 nm. A layer formed by forming such that the ratio of the Ib group element to the IIIb group element is greater than 1.0, and removing a secondary phase Ib group-VIb group compound is used as the first absorber layer. An INDEPENDENT CLAIM is included for a process for producing a solar cell.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic sectional view of a solar cell.    Soda-lime glass (6)    First absorber layer (10)    Second absorber layer (12)    Semi-insulating layer (16)    Window layer. (18)