ORBi: Dewalque Jennifer - 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

Reference : TiO2 multilayer thick films (up to 4 μm) with ordered mesoporosity: Influence of templat...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Chemistry
	To cite this reference:	http://hdl.handle.net/2268/90289

Title :	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
Language :	English
Author, co-author :	Dewalque, Jennifer [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
	Cloots, Rudi [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
	Mathis, François [Université de Liège - ULg > > Centre européen en archéométrie >]
	Dubreuil, Olivier [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
	Krins, Natacha [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
	Henrist, Catherine [Université de Liège - ULg > Département de chimie (sciences) > LCIS - GreenMAT >]
Publication date :	2011
Journal title :	Journal of Materials Chemistry
Publisher :	Royal Society of Chemistry
Volume :	21
Issue/season :	20
Pages :	7356-7363
Audience :	International
ISSN :	0959-9428
e-ISSN :	1364-5501
City :	Cambridge
Country :	United Kingdom
Keywords :	[en] Thin films ; TiO2 ; Anatase ; Multilayer ; EISA ; DSSC
Abstract :	[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.
Permalink :	http://hdl.handle.net/2268/90289
DOI :	10.1039/C1JM10288E

File(s) associated to this reference

Fulltext file(s):

	File	Commentary	Version	Size	Access
Restricted access	displayarticle.cfm.pdf		Publisher postprint	318.84 kB	Request copy

All documents in ORBi are protected by a user license.

Dspace v1.5