Article (Scientific journals)
Pore-filling of Spiro-OMeTAD determined by Rutherford backscattering spectrometry in templated TiO2 photoelectrodes
Dewalque, Jennifer; Colson, Pierre; Thalluri, Venkata Visveswara Gopala Kris et al.
2014In Organic Electronics, 15, p. 9-15
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Keywords :
Dye-Sensitized Solar Cells; Pore-filling; Rutherford Backscattering Spectrometry; Spiro-OMeTAD; Templated mesoporous films; TiO2
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 impact on the dye loading and Spiro-OMeTAD (2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine)9,9'-spirobifluorene) solid electrolyte filling. We first report Rutherford backscattering spectrometry 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 :
Pore-filling of Spiro-OMeTAD determined by Rutherford backscattering spectrometry in templated TiO2 photoelectrodes
Publication date :
2014
Journal title :
Organic Electronics
ISSN :
1566-1199
Publisher :
Elsevier Science
Volume :
15
Pages :
9-15
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 October 2013

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