Zno-Based Semiconductors Studied by Raman Spectroscopy

In the past years the scientific interest in ZnO was renewed because improved processing and better theoretical understanding raised hope for various new applications for instance in opto- electronics spintronics and nanotechnology. The manipulation of ZnO material properties by the incorporation of impurities (e.g. dop- ing magnetic alloying) or by miniaturization (e.g. nanostructures) strongly affects the crystal structure of ZnO and therewith its vibrational properties. In this work ZnO-based semiconductors are studied by Raman spectroscopy and complementary methods (e.g. XRD EPS) with focus on semimagnetic alloying with transition metal ions (V Mn Fe Co Ni) doping (especially p-type doping with nitrogen as acceptor) and nanostructures (especially wet-chemically synthesized nanoparticles).