Invité par Patrick Soukiassian The functionality of nanoscale electronic devices are controlled by novel engineered nanomaterials. ZnO is a unique material that offers about a dozen different application possibilities. ZnO lattice is amenable to metal ion doping (3d and 4f) and the physics of doping in ZnO is very interesting. Doping a small amount of transition metal ion changes the morphology as well as optical properties of the parent ZnO compound. My talk presents results on the bulk, thin film and nanostructured growth of ZnO by diverse growth techniques such as pulsed laser deposition, chemical synthesis and vapour deposition with a view to study optical and electrical properties of undoped and doped ZnO. One-dimensional ZnO nanostructures offer great scope for fundamental studies such the determination of the role of dimensionality in tuning the physical properties. Variations in growth parameters lead to interesting formation of nanostructures of ZnO (see figure below). Results on ZnO encapsulated Fe3O4 nanoparticles have shown promising trends suitable for various applications.
Indian Institute of Technology (IIT) Madras, India