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Laser-sintered mesoporous TiO2 electrodes for dye-sensitized solar cells

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Abstract

Low-temperature laser sintering has been successfully demonstrated to improve the overall conversion efficiency of dye-sensitized solar cells. Mesoporous TiO2 electrodes were prepared from a colloidal solution of TiO2 nanopowders by a laser direct-write technique and then sintered by a quasi-continuous-wave UV laser (λ=355 nm) for the fabrication of dye-sensitized solar cells. The overall conversion efficiency of the cells based on the laser-sintered TiO2 electrodes was double that of the devices with non-laser-treated TiO2 electrodes. This enhancement is attributed to both the removal of organic additives and the improved inter-nanoparticle electrical contacts induced by the laser-sintering process, which led to an increase in porosity and dye-absorption sites in the TiO2 electrodes.

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Authors and Affiliations

  1. Naval Research Laboratory, 4555 Overlook Ave., SW, Washington, DC, 20375, USA

    H. Kim, R.C.Y. Auyeung, M. Ollinger, G.P. Kushto, Z.H. Kafafi & A. Piqué

Authors
  1. H. Kim
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  2. R.C.Y. Auyeung
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  3. M. Ollinger
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  4. G.P. Kushto
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  5. Z.H. Kafafi
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  6. A. Piqué
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Corresponding author

Correspondence to H. Kim.

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PACS

61.80.Ba; 61.46.+w; 73.22.-f; 84.60.Jt

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Kim, H., Auyeung, R., Ollinger, M. et al. Laser-sintered mesoporous TiO2 electrodes for dye-sensitized solar cells. Appl. Phys. A 83, 73–76 (2006). https://doi.org/10.1007/s00339-005-3449-0

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  • DOI: https://doi.org/10.1007/s00339-005-3449-0

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