Effect of binder molecular weight on morphology of TiO2 films prepared by tape casting and their photovoltaic performance

Titanium(IV) oxide in the form of anatase is the best choice for photoanodic materials in dye-sensitised solar cells (DSSCs). The influence of binder molecular weight on the morphology of deposited films, and consequently, DSC parameters was studied. Five different TiO2 tape casting slips were prepa...

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Bibliographic Details
Published in:Science of sintering 2012, Vol.44 (3), p.365-372
Main Authors: Tasic, N, Brankovic, Z, Marinkovic-Stanojevic, Z, Brankovic, G
Format: Article
Language:English
Subjects:
Binders
dye-sensitized solar cell
Molecular weight
Morphology
Nanostructure
PEG
Sintering (powder metallurgy)
Solar cells
Tape casting
TiO2
Titanium dioxide
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Summary:Titanium(IV) oxide in the form of anatase is the best choice for photoanodic materials in dye-sensitised solar cells (DSSCs). The influence of binder molecular weight on the morphology of deposited films, and consequently, DSC parameters was studied. Five different TiO2 tape casting slips were prepared from commercially available nanoanatase powder using polyethylene glycol (PEG) as a binder. The process of drying and sintering was carefully designed, so that the organic template was slowly decomposed, leaving a favourable crack-free, porous structure. It was found that there is an optimal region of binder molecular weight for obtaining homogeneous, nonagglomerated and porous microstructure, which is a necessary condition for application of TiO2 films in DSSCs.
ISSN:0350-820X
1820-7413
DOI:10.2298/SOS1203365T