Poster (Scientific congresses and symposiums)
TiO2 templated films used as photoelectrode for solid-state DSSC applications: study of the pore filling by Rutherford Backscattering Spectroscopy
Dewalque, Jennifer; Colson, Pierre; Thalluri, Venkata Visveswara Gopala Kris et al.
201312th European Conference on Molecular Electronics
 

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Keywords :
Dye-sensitized solar cells; TiO2; Templating; Pore filling; Rutherford backscattering spectroscopy
Abstract :
[en] Liquid-state dye-sensitized solar cells can suffer from electrolyte evaporation and leakage. Therefore solid-state hole transporting materials are investigated as alternative electrolyte materials. However, in solid-state dye-sensitized solar cells, optimal TiO2 films thickness is limited to a few microns allowing the adsorption of only a low quantity of photoactive dye and thus leading to poor light harvesting and low conversion efficiency. In order to overcome this limitation, high surface area templated films are investigated as alternative to nanocrystalline films prepared by doctor-blade or screen-printing. Moreover, templating is expected to improve the pore accessibility what would promote the solid electrolyte penetration inside the porous network, making possible efficient charge transfers. In this study, films prepared from different structuring agents are discussed in terms of microstructural properties (porosity, crystallinity) as well as effect on the dye loading and Spiro-OMeTAD (2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine)9,9'-spirobifluorene) solid electrolyte filling. 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. Besides, we have implemented Rutherford backscattering spectrometry (RBS) as an innovative non-destructive tool to characterize the hole transporting materials infiltration. Templated films show dye loading more than two times higher than nanocrystalline films prepared by doctor-blade or screen-printing and solid electrolyte infiltration up to 88%.
Disciplines :
Chemistry
Author, co-author :
Dewalque, Jennifer  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Colson, Pierre  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Thalluri, Venkata Visveswara Gopala Kris ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Mathis, François ;  Université de Liège - ULiège > Département de physique > Spectroscopie atomique et Physique des atomes froids
Chene, Grégoire ;  Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Henrist, Catherine ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Language :
English
Title :
TiO2 templated films used as photoelectrode for solid-state DSSC applications: study of the pore filling by Rutherford Backscattering Spectroscopy
Publication date :
September 2013
Event name :
12th European Conference on Molecular Electronics
Event place :
Londres, United Kingdom
Event date :
du 3 septembre 2013 au 7 septembre 2013
Audience :
International
Available on ORBi :
since 14 August 2013

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