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One-pot synthesis of metal free organic dyes containing different acceptor moieties for fabrication of dye-sensitized solar cells

The dyes were synthesized through one-pot Knoevenagel condensation reaction which are used as photosensitizers in dye-sensitized solar cell (DSSC). The dye Ar-ma shows high electron life time and maximum power conversion efficiency due to the anchoring group is conjugated with the entire dye molecul...

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Bibliographic Details
Published in:Tetrahedron letters 2013-06, Vol.54 (24), p.3132-3136
Main Authors: Subbaiah, Manoharan, Sekar, Ramkumar, Palani, Elumalai, Sambandam, Anandan
Format: Article
Language:English
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Summary:The dyes were synthesized through one-pot Knoevenagel condensation reaction which are used as photosensitizers in dye-sensitized solar cell (DSSC). The dye Ar-ma shows high electron life time and maximum power conversion efficiency due to the anchoring group is conjugated with the entire dye molecule and the π-spacer is coplanar with acceptor group. A series of metal-free organic dyes containing diphenylamine or diethylamine as a donor which is linked to the acrylic acid or rhodanine-3-acetic acid as a acceptor and phenyl π-spacer were synthesized through one-pot Knoevenagel condensation reaction which are used as photosensitizers for the application of dye-sensitized solar cell (DSSC). Photophysical, electrochemical and DSSC performances were studied for the synthesized dyes of which diphenylamine donor and acrylic acid acceptor based dye (Ar-ma) show high electron life time and maximum power conversion efficiency under AM1.5 illumination (85mWcm−2). Electrochemical impedance spectroscopy results and its theoretical calculation are found to have good agreements with the DSSC output performance.
ISSN:0040-4039
1873-3581
DOI:10.1016/j.tetlet.2013.04.012