Influence of acid/base co-catalyst on the photoelectrochemical properties of TiO2 thin films in dye-sensitized solar cells

Photoelectrochemical properties of TiO2 thin films via co-catalyst sol–gel reaction for dye-sensitized solar cells (DSSCs) were investigated. Three different types of nanocrystalline TiO2 thin films were fabricated from the hydrolysis of Ti isopropoxide with various proportions of an acid/base co-ca...

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Bibliographic Details
Published in:Electrochimica acta 2013-09, Vol.107, p.619-623
Main Authors: Park, Dong-Won, Jeong, Yonkil, Kumar, T. Prem, Lee, Jaeyoung, Choi, Yong-Kook
Format: Article
Language:English
Subjects:
Co-catalyst
Current density
Devices
Dye-sensitized solar cell
Dyes
Electric potential
Junction properties
Photovoltaic cells
Solar cells
Sol–gel
Thin films
TiO2
Titanium dioxide
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Summary:Photoelectrochemical properties of TiO2 thin films via co-catalyst sol–gel reaction for dye-sensitized solar cells (DSSCs) were investigated. Three different types of nanocrystalline TiO2 thin films were fabricated from the hydrolysis of Ti isopropoxide with various proportions of an acid/base co-catalyst. The acid/base co-catalyst with a lower proportion of base catalyst reduces particle size of the TiO2 and increases its cluster size including pore volume, which enhance short-circuit current density and open-circuit voltage of the DSSCs device by reducing charge transfer loss across the TiO2/redox electrolyte interface.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2013.04.117