10% Efficiency dye-sensitized solar cells using P25 TiO2 nanocrystalline electrode prepared by a bead-milling method

Yasuhiro Yamamoto, Masahide Kawaraya, Hiroshi Segawa, Satoshi Uchida, Junya Kano, Fumio Saito, Kazuki Tsujimoto, Tsubasa Saito, Seigo Ito

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20 Citations (Scopus)

Abstract

Dispersions of TiO2 nanoparticles were prepared from titania powder (P25, Degussa) using a bead-mill method. The dispersion was controlled by the mixing time and was observed using dynamic laser-light scattering. TiO 2 screenprinting pastes were prepared from the TiO2 dispersions for application as photoelectrodes in dye-sensitized solar cells (DSSCs). The coated nanocrystalline TiO2 electrodes were evaluated using X-ray diffraction (XRD) and a haze meter. The shape and crystallinity of the TiO 2 nanoparticles were not changed, but the transparency was improved by the beadmilling process. However, aluminum contamination on the TiO2 surface was found to increase with bead-milling time. A TiO2 paste prepared from an optimized dispersion was used to fabricate a DSSC with 10% photoenergy-conversion efficiency.

Original languageEnglish
Pages (from-to)1220-1222
Number of pages3
JournalChemistry Letters
Volume40
Issue number11
DOIs
Publication statusPublished - 2011 Oct 21

ASJC Scopus subject areas

  • Chemistry(all)

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    Yamamoto, Y., Kawaraya, M., Segawa, H., Uchida, S., Kano, J., Saito, F., Tsujimoto, K., Saito, T., & Ito, S. (2011). 10% Efficiency dye-sensitized solar cells using P25 TiO2 nanocrystalline electrode prepared by a bead-milling method. Chemistry Letters, 40(11), 1220-1222. https://doi.org/10.1246/cl.2011.1220