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AKE: Arbeitskreis Energie

AKE 2: Renewable Energy: Photovoltaics

AKE 2.4: Vortrag

Montag, 27. März 2017, 12:00–12:15, S Aula

Influence of the pH value of the dye on the electrical properties of dye sensitized solar cells prepared with anthocyans — •Irén Juhász Junger¹, Sarah Vanessa Homburg¹, Hubert Meissner¹, Thomas Grethe², Anne Schwarz-Pfeiffer², Johannes Fiedler¹, Andreas Hermann¹, Tomasz Blachowicz³, and Andrea Ehrmann¹ — ¹Bielefeld University of Applied Sciences, Faculty of Engineering and Mathematics, Bielefeld (Germany) — ²Niederrhein University of Applied Sciences, Research Institute for Textile and Clothing (FTB), Mönchengladbach (Germany) — ³Silesian University of Technology, Institute of Physics - Center for Science and Education, Gliwice (Poland)

In recent years the harvesting of renewable energies became of great importance. This led to a rapid development of dye-sensitized solar cells which can be produced from cheap, low-purity materials. The best electrical properties are provided by cells prepared using synthetical, ruthenium based dyes. Unfortunately, most of them are toxic and expensive. The anthocyans extracted for example from hibiscus flowers yield a cheap and eco-friendly alternative to the toxic dyes, however, with a loss of solar cell efficiency. Our aim is to improve the conversion efficiency and the stability of solar cells prepared with anthocyans by changing the pH value of the dye. In order to find the optimal pH value, its influence on the solar cell properties is investigated.