Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 50: Organic Electronics and Photovoltaics III - Organic Photovoltaics

CPP 50.12: Vortrag

Donnerstag, 4. April 2019, 12:30–12:45, H18

Growth kinetics of gold electrodes used in hybrid solar cells — •Volker Körstgens¹, Adrian Haussmann¹, Franziska C. Löhrer¹, Matthias Schwartzkopf², Alexander Hinz³, Oleksandr Polonskyi³, Thomas Strunskus³, Hristo Iglev⁴, Stephan V. Roth², Reinhard Kienberger⁴, Franz Faupel³, and Peter Müller-Buschbaum¹ — ¹TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — ²DESY, Notkestr. 85, 22607 Hamburg — ³CAU Kiel, Institut für Materialwissenschaft, Kaiserstr. 2, 24143 Kiel — ⁴TU München, Physik-Department, LS Laser- und Röntgenphysik, James-Franck-Str. 1, 85748 Garching

The morphology of the gold electrode established at the metal-polymer interface between gold and the active layer of hybrid solar cells impacts the performance of devices. In this work the active layer consisting of a water-soluble polythiophene and laser-ablated titania nanoparticles including a blocking layer of PEDOT:PSS [1] is investigated. Gold sputter deposition is applied to the layered system and also the respective pure components. To obtain information of gold cluster growth kinetics during the sputter deposition process, in-situ time resolved grazing incidence small angle X-ray scattering (GISAXS) experiments and grazing incidence wide angle X-ray scattering (GIWAXS) are carried out. Different growth regimes of gold clusters are observed from the data analysis for the various films and the influence of surface roughness is discussed. [1] Körstgens et al., Nanoscale 7, 2900 (2015).