Preparation and characterization of electrodeposited CuInSe2 thin films on flexible substrates for solar cell applications

摘要

In this work, we are reporting the results on the electrochemical studies of the Cu-In-Se system and the deposition and characterization of CuInSe2 thin films prepared on flexible substrates by the electrodeposition technique. We have used an aqueous buffered baths and a careful selection of deposition parameters to ensure a good control of the chemical composition of the deposited films. The electrochemical studies on polyimide with a sputtered Mo layer were performed by using the cyclic voltammetry technique at a temperature of 25 °C. Results have shown the growth of good quality films confirmed by the XRD patterns, very uniform morphology with grain sizes of tenths of a micrometer and a chemical composition very close to the stoichiometry of the CuInSe2 as needed for solar cell applications.