Photoelectrochemical studies on electrodeposited indium doped CdSe thin films using aqueous bath

Present investigation describes the photoelectrochemical studies of electrosynthesized CdSe and indium doped CdSe (In:CdSe) thin films deposited on stainless steel (SS) substrates. The photoelectrochemical (PEC) studies of both films are carried out with CdSe and In:CdSe(SS)/1 M Polysulfide/C cell. It is observed that indium doping in CdSe enhances the fill factor from 0.56 to 0.63 and photo-conversion efficiency from 0.80% to 2.01%. In order to study the consequence of doping, undoped and indium doped CdSe thin films are further characterized by capacitance-voltage, electrochemical impedance spectroscopy (EIS), spectral response, transient responsb, speed of response characterization techniques. By using capacitance-voltage measurement, various physical parameters are estimated and accordingly energy band diagrams have been constructed. (C) 2017 Elsevier B.V. All rights reserved.