IMPROVING THE PERFORMANCE OF SOLAR CELLS BASED ON THIN FILM ELECTROGENERATED OF CuInSe 2

This study shows that thin films of CuInSe 2 and CuIn(Se,S) 2 may be developed by the electrochemical method of deposition using an electrolyte solution containing sulphate. The films obtained are almost amorphous and heat treatment selenizing or sulfurizing is always necessary to improve the crystallinity of the fi lms and to confer the physical properties to them for their application in photovoltaic devices. The heat treatment in the presence of H 2 S also allows the preparation of thin films of the quaternary CuIn(Se,S) 2 . The analysis by X - ray diffraction shows that the films are well crystallized. The current - voltage characteristic of the cell CuIn(Se,S) 2 shows an efficiency of 6.37%