Effect of laser power on force constant and phonon lifetime of stretching and bending vibration of Cu-doped WO nanostructures.

The influence of Cu-doping on their structural, vibrational and morphological properties of hydrothermally prepared Cu-doped WO has been studied. X-ray Diffraction studies confirm the tetragonal structure of WO and lower angle shift in doped samples indicates the incorporation of Cu in tungsten sites. Field emission scanning electron microscopy (FESEM) images exhibit micro rod-like morphology of the as-synthesized WO materials shows microstructure with rod-like projections slowly changes into nanorods and plates for doped samples.

Dopant induced local vibrational modes and Fano scattering in Ag doped ZnO microrods.

We discussed the influence of Ag doping on the crystallite size of ZnO and enhanced Raman spectroscopy properties. We reported optical and vibrational properties of Ag-doped ZnO microrods which have been prepared through reflux method. Dopant induced shift and asymmetric broadening of Raman modes have been discussed.