Fabrication of zno based nanomaterials for optical and electrical applications

Abstract

One Dimension 1D nanostructure has been attracted due to its size and shape related properties and found as fundamental building blocks for the new generation of electronic and photonic devices Therefore the growth of 1D nanostructure was applied out in semiconducting metal oxides metal sulphides carbides nitrides etc Also nanocomposites NCs material has widely used in various fields due to its unique electrical catalytic and optical properties The formation of core shell material needs to selection of both core inner material and shell outer material materials with the aim to optimize the passivation and to reduce the structural defects induced by positive mismatch of their lattice parameters Hence the present work focused to develop 1D zinc oxide ZnO nanorods NRs prepared by a simple Microwave-assisted hydrothermal synthesis route by using a 100 ml Teflon container The structural crystalline nature and purity of the synthesized material was studied by powder X ray diffraction studies The optical absorbance wavelength observed at 368 nm has been shifted to 377 nm during hydrothermal synthesis of ZnO NRs The shifting of wavelength reduces the energy band gap from bulk state of 3 52 eV to 3 32 eV during the Microwave assisted hydrothermal process There is no shift in peak observed in photoluminescence spectrum between ZnO NRs and ZnO nanoparticles NPs but increase in temperature increases the Deep Level Emission DLE intensity due to the loss of oxygen during the hydrothermal process The FTIR analysis confirms the presence of various functional groups in the ZnO NRs and NPs The elemental shape and surface morphology of the ZnO NRs and NPs were determined by using EDAX and FE SEM analysis. newline