Reference : TiO2 multilayer thick films (up to 4 μm) with ordered mesoporosity: Influence of templat...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/90289
TiO2 multilayer thick films (up to 4 μm) with ordered mesoporosity: Influence of template on the film mesostructure and use as high efficiency photoelectrode in DSSCs
English
Dewalque, Jennifer mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Cloots, Rudi mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Mathis, François mailto [Université de Liège - ULg > > Centre européen en archéométrie >]
Dubreuil, Olivier mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Krins, Natacha mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Henrist, Catherine mailto [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
2011
Journal of Materials Chemistry
Royal Society of Chemistry
21
20
7356-7363
Yes (verified by ORBi)
International
0959-9428
1364-5501
Cambridge
United Kingdom
[en] Thin films ; TiO2 ; Anatase ; Multilayer ; EISA ; DSSC
[en] Mesoporous templated anatase thin films are very promising materials to act as photoelectrode in dye-sensitized solar cell. Templated-assisted dip-coating techniques are used to obtain thin films with ordered porosity. However, monolayer films are very thin and suffer from a low quantity of active material, leading to poor photovoltaic performances. In this paper, a dip-coating-based multilayer deposition technique is reported. First, we have studied the influence of the template on the film organization and porosity in terms of long-range order, percentage of porosity, pore size and pores connectivity. Different techniques such as transmission electron microscopy (TEM), atmospheric poroellipsometry (AEP) and UV-visible absorption spectroscopy (UV-vis.) have been used to describe the microstructural features of the films with a thickness of 1 µm. The film exhibiting the highest dye loading was selected and its thickness gradually increased up to 4 µm. Finally, the photovoltaic performances of the thick films (1 to 4 µm) have been evaluated in combination with the N-719 dye and show excellent efficiency (6.1%) when compared to values reported in the literature. Such mesostructured films are compared in terms of photovoltaic performance with TiO2 nanoparticles films, generally used in DSSC.
http://hdl.handle.net/2268/90289
10.1039/C1JM10288E

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