Improved Photoelectrode of Dye-Sensitized Solar Cell Using a ZnO/Zn2TiO4

Warut Koonnasoot; Atcharawan Gardchareon; Supab Choopun; Duangmanee Wongratanaphisan

doi:10.4028/www.scientific.net/MSF.695.505

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HomeMaterials Science ForumMaterials Science Forum Vol. 695Improved Photoelectrode of Dye-Sensitized Solar...

Improved Photoelectrode of Dye-Sensitized Solar Cell Using a ZnO/Zn₂TiO₄

Abstract:

Zinc titanate nanostructures were prepared by oxidation reaction technique. Here Zn mixed with 0, 10, 20 and 30 mol% of TiO₂powder was screened on alumina and FTO substrate, and then sintered at 400–600°C for 12 h under normal atmosphere. Through a detailed field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), and x-ray diffraction (XRD) indicated that the nanostructures exhibited belt-like shapes of Zn₂TiO₄ phase. Moreover, the belt-like nanostructures of the synthesized Zn₂TiO₄ were studied in terms of optical properties by the UV-vis spectroscopy (UV-vis) to obtain band gap energy (E_g). The results showed that the E_g gap energy ranged from 3.57 eV to 3.63 eV as the mol% of TiO₂increased. In addition to the characterization of the nanobelts, the synthesized Zn₂TiO4 nanostructures were applied as a bilayer semiconductor electrode in ZnO-based dye-sensitized solar cell (DSSC). It was shown that the use of Zn₂TiO₄ nanostructure with 10 mol% TiO₂ in the ZnO/Zn₂TiO₄ electrode components of the DSSC revealed the highest obtainable efficiency.

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Periodical:

Materials Science Forum (Volume 695)

Pages:

505-508

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.695.505

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Online since:

July 2011

Authors:

Warut Koonnasoot, Atcharawan Gardchareon, Supab Choopun, Duangmanee Wongratanaphisan

Keywords:

Dye Sensitized Solar Cell (DSSC), Thermal Oxidation, Zinc Oxide (ZnO), Zn₂TiO₄

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