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We have reported on the synthesis of CuO nanostructures via a simple sol-gel approach with high yield at low cost by the reduction of aqueous solutions of Cu(NO 3 ) 2 and Na 2 NO 3 . Synthesized nanostructures were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), fluorescence spectroscopy, Raman scattering and UV-Vis-NIR spectroscopy.Structural studies revealed that the prepared CuO nanostructures were polycrystalline in nature with monoclinic structure. The crystallite size of CuO nanostructures was estimated to be B10 nm using Debye-Scherrer's formula. The uniform and nanoregime grains were observed in SEM micrographs. The optical band gap value was estimated to be 1.2 eV using Tauc's plot. The Raman scattering investigations revealed A g and B g mode peaks at 278 cm À1 , 332 cm À1 and 618 cm À1 , respectively. Hwarangno 14-gil 5, Seongbu-gu,

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Transparent thin films of CdO has been deposited on to glass substrates employing chemical bath deposition. The prepared films are reproducible, adherent to the substrate, pinhole free and uniform. Amongst the different process parameters, the deposition time plays a significant role in obtaining device quality transparent CdO thin films. X-ray powder diffraction (XRD) studies indicated that the thin films are polycrystalline in nature with cubic phase with a cell constant of a = 4.638 Å. The surface morphology of the prepared CdO thin films was examined by scanning electron microscopy. The films deposited at 24 hrs exhibited highest optical transmittivity (>80%) and the direct band gap energy was found to vary from 2.50 to 2.91 eV with a rise deposition time from 6 to 30 hrs. The electrical resitivity variations of these films were measured in the temperature range between 30?C and 150?C by four-probe technique

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