Regensburg 2016 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 26: Poster session II
MM 26.4: Poster
Dienstag, 8. März 2016, 18:30–20:30, Poster B3
Encapsulated silver nanowire electrodes: applications, computer based analysis and stability tests — •Manuela Göbelt1, Ralf Keding1, Matthias Büchele1, Björn Hoffmann1, and Silke Christiansen1,2 — 1Max-Planck-Institute for the Science of Light, Erlangen, Germany — 2Helmholtz Zentrum Berlin für Materialien und Energie, Berlin, Germany
Transparent electrodes are a critical component in optoelectronic devices like solar cells. We developed a novel nano-composite transparent electrode material composed of a wet-chemically synthesized silver nanowire (AgNW) network encapsulated in a transparent conductive oxide which was deposited with nano-scale precision by atomic layer deposition. To demonstrate the performance of the AgNW/AZO electrode, it was used as a top electrode on different optoelectronic devices. With a combination of scanning electron microscopy images and computer based image analysis we can characterize the AgNW networks and determine the percolation of them on large areas. For the object recognition "ImageJ" serves as a basis and a combination of existing plugins and self-written software is used. The new software is capable of handling high aspect ratio objects in an interconnected network, where every single object has several intersections with others. It is possible to distinguish the single wires and to reconstruct their original shape although they are partly covered by others objects. We also take a detailed look at the stability of these nano-composite electrodes under ambient conditions and we will show how the AZO encapsulation shelters the AgNW networks from oxidation and sulfurization.