Film and preparation method

FeS2 film preparation method includes the use of a FTO conductive glass substrate; a seed layer was disposed; at room temperature for immersing the substrate in a solution of pulling plating seed layer, forming a uniform layer of nanocrystalline ZnO seed layer on the substrate surface; configuration precursor solution ; that the substrate surface having a uniform and dense ZnO nanorod arrays film; at room temperature with the substrate to the surface of the ZnO nanorod arrays film is covered with Fe (OH) 3 nanorod array; vulcanized, Fe (OH) 3 nanorods FeS2 into nanorod arrays. FeS2 one kind of film, comprising a substrate made of a FTO conductive glass, covered with a substrate FeS2 nanorods, nanorods each FeS2 nanoparticles made by the accumulation of FeS2. The present invention has the advantage to improve its optical absorption and photoelectric conversion efficiency by increasing the effective area of ​​the light absorbing film iron disulfide.