Electrical Conductivity in Copper Sulfides - Influence of the Deposition Parameters and Precursor’s Concentration

Abstract

: Films of copper sulfides with various composition and properties were deposited on FTO (fluorine doped tin oxide) substrate using SPD (Spray pyrolysis deposition) as deposition technique, from aqueous and alcoholic solutions. The precursors’ solutions of copper (II) chloride and thiourea, in different Cu:S ratios, were sprayed and the deposition parameters were varied. The present paper studies the electrical conductivity of the as-deposited films. The influence of temperature, film composition and film thickness was investigated. Electrical measurements (I-V curves) were registered in dark and were correlated with the film composition and structure, as obtained from the XRD patterns.