On fundamental mechanisms in dye sensitized solar cells through the behaviour of different mesoporous titanium dioxide films

Lídice Vaillant Elena Vigil 1 Fresnel Forcade Thierry Thami 2 Hania Adnani Christelle Yacou 3, 4 Andre Ayral 2 Pierre Saint-Grégoire 5
1 Physics Faculty, University of Havana
2 IEM - Institut Européen des membranes
3 University of Queensland [Brisbane]
4 COVACHIM- M2E - Connaissance et Valorisation : Chimie des Matériaux, Environnement, Energie
5 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
Abstract : Understanding mechanisms in DSSCs is fundamental for their improvement; this includes the nanocrystalline semiconducting layer behaviour. Different mesoporous TiO2 layers are fabricated and analyzed for possible use in DSSC solar cells. The preparations included the addition of P123 triblock copolymer as structuring agent to the synthesized anatase sol. This preparation was also mixed with Degussa P25 TiO2 nanoparticles in one case and polystyrene latex in another. Mesoporous mixed TiO2-SiO2 thin layers were also analyzed. The diverse morphologies and features are studied by microscopic techniques and by means of spectral quantum efficiency of a photoelectrochemical cell (PEC) that uses as photoelectrode the unsensitized porous TiO2 layer. Contact angle measurements are also performed. We have found that a very high specific area due to very small nanocrystals and small pores can hinder electrolyte penetration in the pores formed by TiO2 nanograins, affecting photoelectrodes efficiency. © EDP Sciences, 2015.
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https://hal.univ-antilles.fr/hal-01683213
Contributor : Christelle Yacou <>
Submitted on : Friday, January 12, 2018 - 10:03:24 PM
Last modification on : Tuesday, May 28, 2019 - 2:18:04 PM

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UNIV-AG | IEM | ICG | INC-CNRS | CHIMIE | UNIV-MONTPELLIER

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Lídice Vaillant, Elena Vigil, Fresnel Forcade, Thierry Thami, Hania Adnani, et al.. On fundamental mechanisms in dye sensitized solar cells through the behaviour of different mesoporous titanium dioxide films. European Physical Journal: Applied Physics, EDP Sciences, 2015, 72 (2), ⟨10.1051/epjap/2015150221⟩. ⟨hal-01683213⟩

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