Regensburg 2010 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 38: ZnO and Related Semiconductors
HL 38.6: Vortrag
Mittwoch, 24. März 2010, 10:45–11:00, H17
Synthesis of different ZnO and other nanostructures by modified-VLS approach — •Yogendra Kumar Mishra1, Sören Kaps1, V S K Chakravadhanula2, Seid Jebril1, Lorenz Kienle2, and Rainer Adelung1 — 1Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering, Christian-Albrechts-University, Kaiserstrasse 2, 24143 Kiel, Germany — 2Synthesis and Real Structures, Institute for Materials Science, Faculty of Engineering, Christian-Albrechts-University, Kaiserstrasse 2, 24143 Kiel, Germany
Nanostructures of zinc oxide which are a member of II-VI wide direct bandgap biocompatible semiconductor family, have been of immense fundamental and technological research investigation due to their unqiue optical, electrical and mechanical properties. Several methods have been used for controlled synthesis of different ZnO nanostructures but the fundamental growth mechanism is still an open issue. In present work we report a very simple modified-vapour liquid solid approach for the synthesis of ZnO nanorods, nanoseaurchins and nanocups. Growth mechanism in terms of concentration, temperature and environment will be discussed. Structural evolution of ZnO nanorods and their elemental mapping using high resolution transmission electron microscopy will be presented. Formation of triangular, pentagonal, hexagonal gold nanoparticles and Au nanorods in ZnO matrix will also be presented. Modified vapour liquid solid approach in our group offers a very simple way to synthesize nanostructures of other metals and polymers and some of them will be shown and discussed.