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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 78: Hybrid and Perovskite Photovoltaics II
CPP 78.9: Vortrag
Freitag, 16. März 2018, 11:45–12:00, C 264
In situ study of degradation in P3HT-titania based solid-state dye-sensitized solar cells — •Lin Song1, Weijia Wang1, Stephan Pröller2, Daniel Moseguí González1, Johannes Schlipf1, Christoph J. Schaffer1, Kristina Peters3, Eva M. Herzig2, Sigrid Bernstorff4, Thomas Bein3, Dina Fattakhova-Rohlfing3, and Peter Müller-Buschbaum1 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching — 2TU München, MSE, Herzig Group, 85748 Garching — 3LMU München, Department of Chemistry and CENS, 81377 München — 4Elettra-Sincrotrone Trieste 34149 Trieste, Italy
Solid state dye sensitized solar cells (ssDSSCs) have received great attention over last decades due to low costs, ease of production and high efficiencies. However, the stability of these devices is still not verified. To address this issue, the degradation of ssDSSCs is studied in the present work. To make a comparison, mesoporous titania films with different pore size are used as photoanodes. The impact of pore size on temporal evolution of the P3HT crystallites under continuous solar illumination is compared using in situ grazing-incidence wide-angle x-ray scattering (GIWAXS) measurements, and the development of the photovoltaic characteristics is probed in parallel [1]. The findings of the in-situ study show that pore size plays an important role in the device performance and stability.
[1] ACS Energy Lett.2, 991-997 (2017)