New D-π-A-conjugated organic sensitizers based on α-pyranylidene donors for dye-sensitized solar cells

Emilie Ferreira (1) , Pascal Le Poul (1) , Nolwenn Cabon (1) , Bertrand Caro (1) , Francoise Robin-Le Guen (1) , Yann Pellegrin (2) , Aurélien Planchat (2) , Fabrice Odobel (2)

1 ISCR - Institut des Sciences Chimiques de Rennes
2 CEISAM - Chimie Et Interdisciplinarité : Synthèse, Analyse, Modélisation

A series of new push-pull org. dyes incorporating a cyanoacrylic acid group as electron acceptor unit and α-chalcogenopyranylidene group (X = S; O) as electron donor unit has been synthesized, characterized and used as sensitizer for dye-sensitized solar cells (DSSCs). For the first time, α-pyranylidene and thiopyranylidene groups, have been evaluated in DSSC. To obtain the thermodn. values of the solar cell, an investigation of their electrochem. (CV) and optical properties (UV-vis absorption spectroscopy) is also reported.

Mots clés: D-π-A molecules; α-Pyranylidene; α-Thiopyranylidene; Dye-sensitized solar cell

Domaines: Matériaux; Chimie organique

Emilie Ferreira, Pascal Le Poul, Nolwenn Cabon, Bertrand Caro, Francoise Robin-Le Guen, et al.. New D-π-A-conjugated organic sensitizers based on α-pyranylidene donors for dye-sensitized solar cells. Tetrahedron Letters, 2017, 58 (10), pp.995-999. ⟨10.1016/j.tetlet.2017.01.094⟩. ⟨hal-01475816⟩