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Synthesis of novel ruthenium dyes with thiophene or thienothiophene substituted terpyridyl ligands and their characterization

 
: Ahn, J.; Lee, K.C.; Kim, D.; Lee, C.; Lee, S.; Cho, D.W.; Kyung, S.; Im, C.

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Molecular Crystals and Liquid Crystals 581 (2013), Nr.1, S.45-51
ISSN: 0026-8941
ISSN: 1542-1406
Englisch
Zeitschriftenaufsatz
Fraunhofer KFnSc

Abstract
We synthesized new materials for dye-sensitized solar cell (DSSC) which is incorporating highly conjugated -electron-donating groups, such as thiophene or thieno[3,2-b]thiophene. The synthesized dyes showed similar molar extinction coefficient compared to that of N749. All compounds are analyzed by 1H-and 13C-NMR, and FT-IR spectroscopic measurements. The physical properties of dyes are characterized by UV-vis absorption spectroscopy, cyclic voltamogram and DFT calculation. The power conversion efficiencies (eff) of two synthesized dyes were 4.0 and 3.4%, respectively, under AM1.5G light source. The reference cell (N749) was evaluated the eff of 6.0% at the same conditions.

: http://publica.fraunhofer.de/dokumente/N-300462.html