CI(G)S THIN FILM AND METHOD FOR MANUFACTURING SAME, CI(G)S SOLAR CELL USING SAME AND METHOD FOR MANUFACTURING SAME

摘要

A chelating agent can be added in a CI(G)S thin film manufacturing process to be used as a light-absorbing layer for a solar cell so as to form a complex with Cu or In when dissolving CuI, InI3 and Na2Se used as raw materials of the light-absorbing layer, thereby producing small-sized particles by structurally obstructing the bonding with Se ions. Accordingly, the manufactured CI(G)S thin film can have a porosity of which the size is reduced and an improved uniformity of composition. In addition, the present invention can solve problems of the existing method for manufacturing an absorption layer or a CI(G)S thin film, such as the large size of porosity, having to change a selenization condition for each step, and the deterioration of the uniformity of composition of the manufactured absorption layer or a CI(G)S thin film when the change in the selenization condition is not suitable.