Regensburg 2019 – scientific programme

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MM: Fachverband Metall- und Materialphysik

MM 20: Poster session II

MM 20.23: Poster

Tuesday, April 2, 2019, 18:30–20:00, Poster C

Microscopic Comosition Analysis of Transparent Conductive ZnO:Al — •Eric Weikum and Guido Schmitz — Chair of Material Physics, Institute of Materials Science, University of Stuttgart, Heisenbergstraße 3, 70569 Stuttgart, Germany

Transparent Conductive Oxides (TCO) are promising electrode materials for applications such as Light Emitting Devices and Photovoltaic. The state of the art TCO is Indium Tin Oxide, which suffers from its high cost. A possible alternative is Aluminum doped Zinc Oxide (ZnO:Al), which is studied in this work. The distribution of Aluminum Atoms is being studied using a Laser-Assisted Atom Probe, which allows chemical analysis on the nanometer scale. Tungsten tips are produced by Electropolishing and then developed using a Field Ion Microscope. These developed Tungsten tips are Sputter coated with Zinc Oxide, which is then Field Evaporated in a Laser-Assisted Atom Probe in order to obtain an atomic resolution of the chemical composition. The evaporation behavior of Zinc Oxide in High Electric Fields is being investigated at different doping concentrations and Laser intensities.