Dye-sensitized solar cells (DSSCs) are currently considered one of the most promising alternatives to traditional silicon solar cells.[1] In recent years, our research activity focused on the design and synthesis of new organic dyes with potential applications as sensitizers for DSSCs. The compounds developed in our laboratory were mostly based on a D-?-A architecture, with donor (D) and an acceptor (A) moieties joined by a conjugate unit.[2] We explored the possibility to introduce modifications in all three sections of the molecules by employing different heterocyclic units and functional groups, such as thiazolo[5,4-d]thiazoles, pyridines, pyridine-N-oxides, phenothiazines and siloxanes (see Figure).[3] In this communication, we will present the synthesis of the new compounds and discuss how structural modifications influence their optical properties, such as UV-Vis absorption and fluorescence emission maxima, as well as their electrochemical characteristics. In addition, we will present our studies on the fabrication and testing of DSSCs built using the new sensitizers, highlighting our best results both in terms of device efficiency and stability. References [1]Hagfeldt, A.; Boschloo, G.; Sun, L.; Kloo, L.; Pettersson, H. Chem. Rev. 2010, 110, 6595. [2]Ooyama, Y.; Harima, Y. ChemPhysChem 2012, 13, 4032. [3](a) Dessì, A. et al., Eur. J. Org. Chem. 2013, 1916; (b) Zani, L. et al., Tetrahedron Lett. 2013, 54, 3944. (c) Cecconi, B. et al., Asian J. Org. Chem. 2014, 3, 140; (d) Franchi, D. et al., Tetrahedron 2014, accepted for publication.
Development of New D-pi-A Organic Sensitizers for Application in Dye-Sensitized Solar Cells
Massimo Calamante;Gianna Reginato;Alessandro Mordini;Lorenzo Zani
2014
Abstract
Dye-sensitized solar cells (DSSCs) are currently considered one of the most promising alternatives to traditional silicon solar cells.[1] In recent years, our research activity focused on the design and synthesis of new organic dyes with potential applications as sensitizers for DSSCs. The compounds developed in our laboratory were mostly based on a D-?-A architecture, with donor (D) and an acceptor (A) moieties joined by a conjugate unit.[2] We explored the possibility to introduce modifications in all three sections of the molecules by employing different heterocyclic units and functional groups, such as thiazolo[5,4-d]thiazoles, pyridines, pyridine-N-oxides, phenothiazines and siloxanes (see Figure).[3] In this communication, we will present the synthesis of the new compounds and discuss how structural modifications influence their optical properties, such as UV-Vis absorption and fluorescence emission maxima, as well as their electrochemical characteristics. In addition, we will present our studies on the fabrication and testing of DSSCs built using the new sensitizers, highlighting our best results both in terms of device efficiency and stability. References [1]Hagfeldt, A.; Boschloo, G.; Sun, L.; Kloo, L.; Pettersson, H. Chem. Rev. 2010, 110, 6595. [2]Ooyama, Y.; Harima, Y. ChemPhysChem 2012, 13, 4032. [3](a) Dessì, A. et al., Eur. J. Org. Chem. 2013, 1916; (b) Zani, L. et al., Tetrahedron Lett. 2013, 54, 3944. (c) Cecconi, B. et al., Asian J. Org. Chem. 2014, 3, 140; (d) Franchi, D. et al., Tetrahedron 2014, accepted for publication.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
