Regensburg 2016 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 26: Poster session II
MM 26.1: Poster
Dienstag, 8. März 2016, 18:30–20:30, Poster B3
Mechanical behavior of fivefold twinned silver nanowires by means of in situ tensile tests in the TEM — •Nadine Schrenker1, Mirza Mackovic1, Manuela Göbelt2, Silke Christiansen2,3, and Erdmann Spiecker1 — 1Center for Nanoanalysis and Electron Microscopy, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany — 2Max Planck Institute for the Science of Light, Erlangen, Germany — 3Helmholtz Centre Berlin for Materials and Energy, Germany
Organic (opto)electronics have recently undergone a rapid development. Major advantages compared to their inorganic counterparts are that they can be manufactured on flexible substrates. Silver nanowire (Ag NW) films are highly promising as flexible transparent electrodes, e.g., for organic solar cells, as they fulfill the requirement of a low sheet resistance combined with a high transparency. Indium tin oxide (ITO), which is still the most common used material, behaves brittle under deformation and is relatively expensive. On a macroscopic scale bending tests revealed the excellent performance of Ag NW films, since the increase of resistance is small compared to ITO films. To complement the macroscopic bending tests, understand failure mechanisms and prospectively optimize the deformation behavior of AgNW electrodes in situ mechanical testing in the TEM are conducted. On a nm scale tensile tests of single 5-fold twinned Ag NWs show a ductile behavior and a size effect of the strength. Moreover, microscopic in situ tensile tests of individual junctions and areas on the µm scale of AgNW films in the TEM are in focus of our current research.