Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 47: Electrical, Dielectrical and Optical Properties of Thin Films II
CPP 47.2: Vortrag
Mittwoch, 14. März 2018, 12:15–12:30, C 230
Optoelectronic properties of Ag clusters on polymer thin films during sputter deposition — •Marc Gensch1,2, Matthias Schwartzkopf1, Bjoern Beyersdorff1, Wiebke Ohm1, Calvin Brett1,3, Deniza Checkrygina2, Pallavi Pandit1, Andreas Stierle2, and Stephan Roth1,3 — 1DESY, Notkestr. 85, D-22607 Hamburg — 2University of Hamburg, Luruper Chaussee 149, D-22761 Hamburg — 3KTH, Teknikringen 56-58, SE-100 44 Stockholm
Nanostructured polymer-metal-composites demonstrate great perspectives for optoelectronic applications [1], e.g. as sensors or photovoltaics. To enhance properties of such devices the self-assembly process needs to be understood. We studied the insulator-metal transition during sputter deposition of silver on co- and homopolymers by grazing incidence small-angle X-ray scattering (GISAXS) in combination with surface differential reflectance spectroscopy (SDRS) [2]. As templates, solvent annealed highly ordered PS-b-PMMA diblock copolymers and their corresponding homopolymers were used. Our study reveals the selective wetting of silver on one of the polymer blocks and the influence of the template on the percolation behavior of the silver layer. In situ GISAXS measurements indicate a difference in the embedding of silver clusters depending on the polymer template. [1] S. V. Roth et al., ACS Appl. Mater. Interfaces 7, 12470 (2015). [2] M. Schwartzkopf et al., ACS Appl. Mater. Interfaces 7, 13547 (2015).