A triphenylamine dye model for the study of intramolecular energy transfer and charge transfer in dye-sensitized solar cells

Tian, HainingYang, XichuanPan, JingxiChen, RuikuiLiu, MingZhang, QingyuHagfeldt, AndersSun, Licheng2015-07-062015-07-062015-07-06200810.1002/adfm.200800516https://infoscience.epfl.ch/handle/20.500.14299/115762A novel dye (2TPA-R), contg. 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 org. 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, resp., are also synthesized as refs. to study the intramol. energy transfer (EnT) and charge transfer (ICT) processes of 2TPA-R in CH2Cl2 soln. and on a TiO2 surface. The results suggest that the intramol. EnT and ICT processes show a pos. effect on the performance of DSSCs. However, the flexible structure and less-adsorbed amt. of dye on TiO2 may make it difficult to improve the efficiency of DSSCs. This study on intramol. EnT and ICT processes acts as a guide for the design and synthesis of efficient org. dyes in the future.triphenylamine dye model DSSC intramol energy charge transferA triphenylamine dye model for the study of intramolecular energy transfer and charge transfer in dye-sensitized solar cellstext::journal::journal article::research article