NOVELTY - A thin film solar cell structure comprises: substrate (4); back electrode layer (3) configured on the substrate; light absorbing layer (2) configured on the back electrode layer, where the light absorbing layer contains at least one layer of chalcopyrite powder stacked structure, where the chalcopyrite powder stacked structure is constituted of p-type chalcopyrite powder layer and n-type chalcopyrite powder layer stacked on each other; and transparent conductive layer (1) configured on the light absorbing layer.    USE - As a thin film solar cell structure (claimed), used as renewable energy source.    ADVANTAGE - The thin film solar cell structure includes light absorbing layer having chalcopyrite powder, which is prepared in nanometer scale, thus improves the photoelectric conversion efficiency.    DETAILED DESCRIPTION - A thin film solar cell structure comprises: substrate (4); back electrode layer (3) configured on the substrate; light absorbing layer (2) configured on the back electrode layer, where the light absorbing layer contains at least one layer of chalcopyrite powder stacked structure, where the chalcopyrite powder stacked structure is constituted of p-type chalcopyrite powder layer and an n-type chalcopyrite powder layer stacked on each other, where the p-type chalcopyrite powder layer contains single phase p-type chalcopyrite powders, and the n-type chalcopyrite powder layer contains single phase n-type chalcopyrite powders; and transparent conductive layer (1) configured on the light absorbing layer. The p-type chalcopyrite powders or n-type chalcopyrite powders are formed by mixing Se, Cu-contained compound, and In-contained compound with a metal chelating agent, and then processing the mixture under a high pressure and a temperature of 180 degrees C for 18 hours, and then processing the mixture with a washing agent for removing their anions.    DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of a thin film solar cell having a light absorbing layer.    Transparent conductive layer (1)    Light absorbing layer (2)    Back electrode layer (3)    Substrate (4)