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  4. Synthesis of mesoporous titanium dioxide by soft template based approach: characterization and application in dye-sensitized solar cells
 
research article

Synthesis of mesoporous titanium dioxide by soft template based approach: characterization and application in dye-sensitized solar cells

Gajjela, Satyanarayana Reddy
•
Ananthanarayanan, Krishnamoorthy
•
Yap, Christopher
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2010
Energy & Environmental Science

The present work demonstrates the usefulness of the soft-template directed approach in preparing mesoporous titanium dioxide and applying it in dye-sensitized solar cells (DSSCs). Mesoporous titanium dioxide with nanograins of dimension in the range, 16-20 nm were prepared through the soft-templating approach using various cationic surfactants such as octyl-, dodecyl-, cetyl trimethylammonium bromide with different surfactant compositions and titania precursor concentrations. As-synthesized mesoporous titanium dioxide samples were characterized by TGA, PXRD, FESEM, HRTEM and surface area measurements, used as photo-electrode material in DSSCs. Under global AM 1.5 solar irradiation, the best photovoltaic performance of 7.5% with a short circuit photocurrent density of 14.2 mA/cm(-2), an open circuit voltage of 748 mV, and a fill factor of 70.83% were obtained for the DSSC using a film of mesoporous TiO2 synthesized from the cetyl trimethylammoniumbromide surfactant. In contrast, the use of commercial titania powder P25 resulted in an efficiency of 5.0% under similar conditions. The structural and morphological merits of these template-directed materials will be especially addressed in comparison with their traditional bulk forms.

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Type
research article
DOI
10.1039/b921360k
Web of Science ID

WOS:000279245600016

Author(s)
Gajjela, Satyanarayana Reddy
•
Ananthanarayanan, Krishnamoorthy
•
Yap, Christopher
•
Graetzel, Michael  
•
Balaya, Palani
Date Issued

2010

Publisher

Royal Society of Chemistry

Published in
Energy & Environmental Science
Volume

3

Start page

838

End page

845

Subjects

Nanocrystalline Tio2 Films

•

Conversion Efficiency

•

Electric-Power

•

Surfactant

•

Anatase

•

Performance

•

Crystallization

•

Assemblies

•

Silica

•

Rutile

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPI  
Available on Infoscience
September 14, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/53625
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