Regensburg 2007 – wissenschaftliches Programm

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SYOE: Symposium Organic Thin Film Electronics: From Molecular Contacts to Devices

SYOE 8: Poster Session SYOE

SYOE 8.59: Poster

Dienstag, 27. März 2007, 18:00–20:00, Poster B

Dye sensitized solar cells based on novel bipolar spiro compounds — Cherubin Noumissing Sao, Kristian Onken, Tobat P. I. Saragi, and •Josef Salbeck — Macromolecular Chemistry and Molecular Materials (mmCmm), Department of Science and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, 34109 Kassel, Germany

We report dye sensitized solar cells (DSSC) based on novel bipolar spiro compounds containing perylene and diphenylamino moiety. The corresponding compound has high extinction coefficient (~10^5 M^-1 cm^-1) and, therefore, is a potential compound for DSSCs applications. After an ultraviolet treatment of the device, the short circuit current density increases from 0.04 mA cm^-2 to 0.10 mA cm^-2 especially with t-butyl ammonium ion containing cell. In contrast, no noticeable change in current density in device containing Lithium ion has been observed.