Preparation of ZnO nanoparticles on transparent and conductive In-doped ZnO thin film

Abstract

Highly c-axis oriented transparent and conductive In-doped zinc oxide (ZnO:In) thin films were deposited on glass substrates by radio frequency (R.F) sputtering. The photoluminescence (PL) spectra were measured in therange of wavelength 350-750 nm at room temperature. The resistivity of the ZnO films doped 2 wt% indium was lowest and equal to 4.5×10 4Ωcm and a transmittance was of about 80 % in the visible range. Nanostructured ZnO materials have been synthesized from zinc acetate, sodium hydroxide(NaOH} and polyethylene glycol (PEG) by simple hydrothermal method. The results showed that the morphologies and sizes of ZnO nanomaterials depend on the temperature of creation, concentration of PEG, and the pH level of the solution. The ZnO nanopowders structure was characterized by X-ray powder diffraction (XRD). Raman scattering studies confirm that the as-synthesized nanomaterials on transparent and conductive ZnO:In thin films are of high crystalline quality. Photoluminescence have been observed. Nano ZnO/ZnO:In bilayer film was used in a dye-sensitized solar cell (DSSCs) as a working electrode and platinum electrode as a counter electrode