Dresden 2014 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 19: Poster Session 1 (joint session with BP)

CPP 19.28: Poster

Tuesday, April 1, 2014, 09:30–13:00, P1

Hybrid solar cells based on aqueous processed titania nanoparticles — •Christoph Mayr¹, Volker Körstgens¹, Hristo Iglev², and Peter Müller-Buschbaum¹ — ¹TU München, Physik Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — ²TU München, Physik Department, LS Laser- und Röntgenphysik, James-Franck-Str. 1, 85748 Garching

One way towards ’green’ solar cells is using aqueous-processed hybrid solar cells, because they require only a low energy amount in fabrication and furthermore a production without toxic organic solvents is possible. For the electron donor and acceptor we use a water soluble P3HT analogon and TiO₂ nanoparticles, respectively. The advantage of these particles is their size tuneability, their high absorption coefficient and the high surface area. Therefore a large interfacial area with the polymer is facilitated. The active layer is applied via solution casting. The final solar cells work with a decent efficiency, which we determined under AM 1.5 conditions. Moreover we investigate the thin films of the active layer with XRD and SEM measurements to characterize the crystalline structure and the surface structure, respectively.