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ECN publicatie:
Titel:
Acid versus base peptization of masoporous nanocrystalline TiO2 films: functional studies in dye sensitized solar cells
 
Auteur(s):
Hore, S.; Polamares, E.; Smit, H.J.P.; Bakker, N.J.; Comte, P.; Liska, P.; Thampi, K.R.; Kroon, J.M.; Hinsch, A.; Durrant, J.R.
 
Gepubliceerd door: Publicatie datum:
ECN Zonne-energie 1-1-2005
 
ECN publicatienummer: Publicatie type:
ECN-RX--05-051 Artikel wetenschap tijdschrift
 
Aantal pagina's:
7  

Gepubliceerd in: Journal of Materials Chemistry (The Royal Society of Chemistry), , 2005, Vol.15, p.412-418.

Samenvatting:
We report an analysis of the influence of acid/base conditions employedin the synhesis of TiO2 nanoparticles upon the performance of dye sensitised photoelectrochemical solar cells fabricated from these particles. The functional properties of the TiO2 nanoparticles in these devices are investigated by potential step chronoperometry, transient laser spectroscopy, and photovoltaic device characterisation. We find that base peptization conditions employed in the sol-gel fabrication of the TiO2 nanoparticles result in a reduction in film electron density under negative applied bias, correlated with slower interfacial recombination losses and a higher device open circuit voltage.


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