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|Title:||Synthesis of mesoporous titanium dioxide by soft template based approach: Characterization and application in dye-sensitized solar cells|
|Citation:||Gajjela, S.R., Ananthanarayanan, K., Yap, C., Grätzel, M., Balaya, P. (2010). Synthesis of mesoporous titanium dioxide by soft template based approach: Characterization and application in dye-sensitized solar cells. Energy and Environmental Science 3 (6) : 838-845. ScholarBank@NUS Repository. https://doi.org/10.1039/b921360k|
|Abstract:||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. © 2010 The Royal Society of Chemistry.|
|Source Title:||Energy and Environmental Science|
|Appears in Collections:||Staff Publications|
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