THE EFFECT OF TIN DOPING ON THE STRUCTURAL AND OPTICAL PROPERTIES OF COPPER OXIDE THIN FILMS SYNTHESIZED BY USING CHEMICAL BATH DEPOSITION METHOD

Abstract

This thesis studied the effect Tin doping copper oxide thin films synthesis by chemical bath deposition method. The deposition of thin film was done on glass substrate by changing the tin chloride solution as 0ml, 2ml, 4ml and 6ml. The deposition of thin film was done by using 0.4M of copper acetate as Cu source and 5ml Ammonia to control the PH value 3ml of Hydrazine as a comp lexcing agent at constant temperature of 50℃ and constant time of 25 minute. The structural and optical properties were studied by using XRD and UV VIS technologies. The XRD patterns show two phase that CU2O which have cubic crystal structure and Copper mono oxide which have monoclinic crystal structure. The crystallite size of the cubic Cu2O phase deposited at 0 ml, 2 ml and 4 ml SnCl2 was 38.51, 33.44 and 37.74 nm respectively. The crystallite size of the CuO phase deposited at 2 ml, 4 ml and 6 ml SnCl2 are 11.75, 77.6 and 15.99 nm respectively. The intensity was decrease as the doping level increase in both Cu2O and CuO. The UV-VIS investigation revealed the three energy band gap result when2ml, 4ml and 6ml of tin chloride added to the solution the energy band gap observed between wave length of 400-800 nm shows at 2ml 1.7ev,at 4ml 1.9ev .and at 6ml 2.05ev.