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

Abstract :

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.

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https://hal.univ-angers.fr/hal-03343421
Contributeur : Okina Université d'Angers <>
Soumis le : mardi 14 septembre 2021 - 10:38:04
Dernière modification le : mercredi 15 septembre 2021 - 03:27:12

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Citation

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, American Chemical Society, 2010, 114 (26), pp.11659 - 11664. ⟨10.1021/jp102946z⟩. ⟨hal-03343421⟩

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