Photo Response Studies of Electrophoretically Deposited Nanostructured Cadmium Sulfide Thin Film

Abstract

Cd2+ rich Cadmium Sulfide (CdS) nanoperticles caped with Triethanolamine (TEA) as an organic ligand were synthesized by chemical precipitation. These nanostructured CdS nanoparticles were deposited on aluminum foil by electrophoretic deposition technique. Both nanoparticles and thin film are studied by x-ray diffraction, glancing incidence x-ray diffraction and atomic force microscopy measurements to understand the growth, stability and surface morphology. The highest photocurrent obtained as 6.5 µA at incident wavelength λ = 400 nm with an applied bias voltage of 10 V in the CdS thin films. Also time response of the photocurrent reveals the corrosion at the surface of CdS particles i.e get decompose into Cd 2+ and S 2-ions.