Electrochemical Deposition of CuxSnySzO Thin Films and Their Application for Heterojunction Solar Cells

Abstract

CuxSnySzO (CTSO) thin films were deposited from an aqueous solution containing CuSO4, SnSO4, and Na2S2O3 by electrochemical techniques. The deposited films were characterized by Auger electron spectroscopy, X-ray diffraction, and optical transmission spectroscopy. The photoelectrochemical measurement showed that the films have p-type conduction and photosensitivity. ZnO/CTSO heterojunction solar cells were fabricated. Rectification properties were observed, and the cell showed an efficiency of 4.9×10−3% under AM1.5 illumination.