CZTSbased absorber layer thin film for solar cell with indium preparing method of the same and solar cell using the same

摘要

The present invention relates to a CZTS-based thin film solar cell using indium, a method of manufacturing the same and a solar cell using the same. The CZTS thin film solar cell to which indium is added according to the present invention comprises: (a) ; (b) copper (Cu), zinc (Zn), tin (Sn), and sulfur (S) on the rear electrode layer; Or a metal precursor including copper (Cu), zinc (Zn), tin (Sn), and selenium (Se) to form a metal precursor layer; (c) implanting indium on the metal precursor layer to form an indium-implanted layer; And (d) performing a high-temperature heat treatment in an inert gas atmosphere after the step (c) is completed. In the indium-doped CZTS thin film solar cell manufactured by the above method, the surface of the CZTS- And the efficiency of the solar cell can be improved by reducing the recombination characteristics in the depletion layer by forming a buried-homojunction.