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A Triphenylamine Dye Model for the Study of Intramolecular Energy Transfer and Charge Transfer in Dye-Sensitized Solar Cells
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2008 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 18, no 21, 3461-3468 p.Article in journal (Refereed) Published
Abstract [en]

A novel dye (2TPA-R), containing two triphenylamine (TPA) units connected by a vinyl group and rhodanine-3-acetic acid as the electron acceptor, is designed and synthesized successfully to reveal the working principles of organic dye in dye-sensitized solar cells (DSSCs). 2TPA and TPA-R, which consist of two TPA units connected by vinyl and a TPA unit linked with rhodanine-3-acetic acid, respectively, are also synthesized as references to study the intramolecular energy transfer (EnT) and charge transfer (ICT) processes of 2TPA-R in CH2Cl2 solution and on a TiO2 surface. The results suggest that the intramolecular EnT and ICT processes show a positive effect on the performance of DSSCs. However, the flexible structure and less-adsorbed amount of dye on TiO2 may make it difficult to improve the efficiency of DSSCs. This study on intramolecular EnT and ICT processes acts as a guide for the design and synthesis of efficient organic dyes in the future.

Place, publisher, year, edition, pages
2008. Vol. 18, no 21, 3461-3468 p.
URN: urn:nbn:se:kth:diva-18004DOI: 10.1002/adfm.200800516ISI: 000261198200015ScopusID: 2-s2.0-55849085009OAI: diva2:336049
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Hagfeldt, AndersSun, Licheng
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