Dresden 2014 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 37: Poster Session 2

CPP 37.57: Poster

Mittwoch, 2. April 2014, 15:00–19:00, P3

Crystallinity investigations on an aqueous-processable conducting polymer for applications in environmentally friendly organic solar cells — •Stephan Pröller^1,2, Volker Körstgens², Daniel Moseguí González², Yuan Yao², Shun Yu³, Stephan V. Roth³, Eva M. Herzig¹, and Peter Müller-Buschbaum² — ¹TU München, MSE, Lichtenbergstr. 4, 85748 Garching — ²TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — ³DESY, Notkestr. 85, 22603 Hamburg

When assembling organic solar cells, organic solvents are used which are often even toxic and cause the technology not to be as 'green' as intended to be. Therefore, polymers being processable in non-toxic solvents such as water are of high interest as donor material in the active layer of organic solar cells. One possible polymer is poly[3-(potassium-6-hexanoate)thiophene-2,5-diyl] (P3P6T), a derivate of P3HT. Next to optical properties like absorption and band gap, the crystallinity of polymer films is of special interest in order to obtain efficiently working solar cells. For high charge carrier mobility, local scale ordering appears to be essential. Therefore, detailed studies on the crystallinity of P3P6T and the dependence on annealing temperature are performed. The thin films are prepared via spin coating and solution casting. The optical properties are investigated using UV/Vis spectroscopy. Crystallinity investigations are performed using XRD and GIWAXS measurements.