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Article Dans Une Revue Journal of Physical Chemistry C Année : 2010

Bilayer Hybrid Solar Cells Based on Triphenylamine−Thienylenevinylene Dye and TiO2

Eva-L. Unger
  • Fonction : Auteur
Emilie Ripaud
  • Fonction : Auteur
Philippe Leriche
Antonio Cravino
  • Fonction : Auteur
Jean Roncali
E. Johansson
Anders Hagfeldt
  • Fonction : Auteur
Gerrit Boschloo
  • Fonction : Auteur

Résumé

Photoinduced energy conversion from multilayers of organic dye on dense TiO2 films was investigated in bilayer hybrid solar cells. Dye layers of varying thicknesses were prepared by spin-casting the star-shaped dye [tris(dicyano-vinyl-2-thienyl)phenyl]amine (1) from solutions onto dense TiO2 on conducting glass substrates. A spin-cast layer of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) and graphite powder was used for contacting the devices. Excitons generated in the dye multilayer contribute to the power conversion efficiency, reaching a maximum of ca. 0.3% at a dye layer thickness of ca. 8 nm for the devices described herein. For dye layers exceeding 5 nm, the cell performance becomes limited by the exciton diffusion length LED and the hole mobility in the organic layer. Using dye multilayers is a viable way to increase light harvesting in solid-state dye-sensitized solar cells.

Domaines

Chimie
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Dates et versions

hal-03343421 , version 1 (14-09-2021)

Identifiants

Citer

Eva-L. Unger, Emilie Ripaud, Philippe Leriche, Antonio Cravino, Jean Roncali, et al.. Bilayer Hybrid Solar Cells Based on Triphenylamine−Thienylenevinylene Dye and TiO2. Journal of Physical Chemistry C, 2010, 114 (26), pp.11659 - 11664. ⟨10.1021/jp102946z⟩. ⟨hal-03343421⟩
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