Effects of Cd Doping on Structural, Optical and Photoconductive Properties of ZnO Nano Particles

ZnO nanoparticles were doped with Cd in various proportions by chemical method and annealed at 600 C. The structural and optical properties of these oxide samples were systematically studied by XRD, SEM, EDS and PL spectrometer. XRD pattern shows a hexagonal wurtzite structure. The size of particle as shown by XRD machine and calculated by Scherer's formula are found in the nano range. The formation of particles showed that they were polycrystaline. two new peaks were observed in XRD pattern of a few samples. The height of new peaks was increasing with the increase of amount of Cd in ZnO. SEM micrograph confirm the formation of nanoparticle and EDS study shows the success of doping ZnO with Cd. Optical properties like photoluminescence emission showed a blueshift in peak wavelength. General conductivity and photoconductivity was found increasing as the amount of Cd was increasing.