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A Triphenylamine Dye Model for the Study of Intramolecular Energy Transfer and Charge Transfer in Dye‐Sensitized Solar Cells
Author(s) -
Tian Haining,
Yang Xichuan,
Pan Jingxi,
Chen Ruikui,
Liu Ming,
Zhang Qingyu,
Hagfeldt Anders,
Sun Licheng
Publication year - 2008
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200800516
Subject(s) - triphenylamine , rhodanine , intramolecular force , materials science , photochemistry , acetic acid , acceptor , dye sensitized solar cell , organic chemistry , chemistry , polymer chemistry , physics , electrode , electrolyte , condensed matter physics
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 (E n T) and charge transfer (ICT) processes of 2TPA‐R in CH 2 Cl 2 solution and on a TiO 2 surface. The results suggest that the intramolecular E n T and ICT processes show a positive effect on the performance of DSSCs. However, the flexible structure and less‐adsorbed amount of dye on TiO 2 may make it difficult to improve the efficiency of DSSCs. This study on intramolecular E n T and ICT processes acts as a guide for the design and synthesis of efficient organic dyes in the future.