Dresden 2011 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 48: ZnO: Devices

HL 48.11: Talk

Wednesday, March 16, 2011, 13:00–13:15, POT 151

Electrical properties of 1D to 3D ZnO nanostructures synthesized by flame transport synthesis approach — •Arnim Schuchardt, Sören Kaps, Yogendra Kumar Mishra, Ingo Paulowicz, and Rainer Adelung — Functional Nanomaterials, Institute for Material Science, Faculty of Engineering, Christian-Albrechts-University, Kaiserstraße 2, 24143 Kiel Germany

Due to the piezoelectricity and the strong tendency to grow self organised in one or two dimensional structures with high aspect ratios, ZnO has obtained huge interest for the application in nanogenerators. With a simple flame transport method self organised ZnO-structures with dimensions ranging from nm up to mm were synthesised. In first experiments to investigate the piezoelectric properties of ZnO rods, these rods where deformed periodically by a PZT piezo actuator including a simultaneous measurement of the voltage. The electrical properties of ZnO structures synthesised by the flame transport method and the influence of the metallic contacts will be shown and discussed. The occurrence of Schottky contacts in between the ZnO structures and the metallic contacts will be elaborated in more detail. With respect to the generator applications, the change of the electrical conductivity under normal and bended state for a ZnO rod was performed and preliminary results will be discussed. Apart from ZnO rods, electrical properties of 3-dimensional complex flexible network of ZnO nanostructures will also be discussed.