Abstract
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Highlights
ZnO nanostructures have great importance in nanotechnology as nanotubes, nanowires, nanorods, nano belts, nanocables etc
Figures show the Scanning Electron Microscopy (SEM) images of ZnO nanoneedle obtained under different growth temperatures
They show that a ZnO nanoneedles having a diameter of from 10-15nm are formed under different growth temperatures at 50oC, 65oC, 75oC and 85oC
Summary
ZnO nanostructures have great importance in nanotechnology as nanotubes, nanowires, nanorods, nano belts, nanocables etc. ZnO is the material of the family of IIVI semiconductors. Binding energy of ZnO is 60 meV and band gap energy is 3.37 eV besides this it has high breakdown strength, cohesion and excitation stability for which it has greater importance in nanotechnology. For its vertical geometry this is suitable for filling with hole transporting materials [1-4]. There are various methods of preparing ZnO nanostructure such as vapour-liquid-solid growth, Template-based methods, chemical vapour deposition, and hydrothermal process [5-10]. Cobalt nanoparticles were prepared by modified Polyol process [11]
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