Optimization of aluminum doped ZnO nanowires for photoelectrochemical water splitting

Undoped and aluminum-doped ZnO nanowire (NW) arrays with high aspect ratio and doping concentration up to 2.0 at.% in Al, were prepared by chemical bath deposition (CBD) technique onto FTO/glass substrates. The morphological, structural, and optical properties of the as-grown NWs were investigated by using electron microscopy, diffraction, and spectroscopic techniques. The prepared samples were used as photoanodes in a photoelectrochemical cell...