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Faculty for Biology, Chemistry, and Earth Sciences

Macromolecular Chemistry I:

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Boschloo, G.; Marinado, T.; Nonomura, K.; Edvinsson, T.; Agrios, A.G.; Hagberg, D.P.; Sun, L.; Quintana, M.; Karthikeyan, C.S.; Thelakkat, M.; Hagfeldt, A.: A comparative study of a polyene-diphenylaniline dye and Ru(dcbpy)2(NCS)2 in electrolyte-based and solid-state dye-sensitized solar cells, Thin Solid Films, 516(20), 7214–7217 (2008) -- DOI: 10.1016/j.tsf.2007.12.035

A small organic sensitizer, the polyene-diphenylaniline dye D5, was compared with the standard sensitizer N719 (Ru(dcbpy)2(NCS)2) in a dye-sensitized solar cell investigation. In solar cells with relatively thin layers of mesoporous TiO2 (< 3 μm) D5 outperformed N719 because of its high extinction coefficient. D5 showed also better performance than N719 in the case of sensitization of mesoporous ZnO. In solid-state solar cells, where the iodide/triiodide electrolyte was replaced by an amorphous hole conductor (spiro-OMeTAD), D5 gave promising preliminary results. The hole conductivity, observed in monolayers of D5 adsorbed at TiO2, may possibly lead to improved performance in such cells.

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