Nb2O5-based composite electrodes for dye-sensitized solar cells

Koichi Eguchi, Hideyuki Koga, Koshi Sekizawa, Kazunari Sasaki

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Various semiconducting oxides are examined as alternative electrode materials for dye-sensitized solar cells. It was confirmed that Nb2O5-based electrodes exhibit a higher open-circuit voltage and fill factor, compared to TiO2-based electrodes. It was also found that a mixing of oxides, with a higher flat-band potential level such as SrTiO3, Ta2O5, and ZrO2, with Nb2O5 led to a higher open-circuit voltage. By mixing Nb2O5 with TiO2 in different ratios, it was revealed that these oxides form no chemical reaction products after a low-temperature heat treatment and a highest power output of the cells with the composite electrodes was obtained at Nb2O5 : TiO2 = 8 : 2 in mass. The power output with this composite electrode was higher than that with pure Nb2O5 or with pure TiO2. The Nb2O5-TiO2 composite electrode, in which the Nb2O5 particles are dispersed on the TiO2 surfaces, exhibits high photoelectrochemical performance.

Original languageEnglish
Pages (from-to)1067-1071
Number of pages5
JournalJournal of the Ceramic Society of Japan
Volume108
Issue number12
Publication statusPublished - Jan 1 2000

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solar cells
dyes
Electrodes
composite materials
electrodes
Composite materials
Oxides
open circuit voltage
Open circuit voltage
oxides
high voltages
Low temperature operations
output
electrode materials
reaction products
chemical reactions
Reaction products
heat treatment
Dye-sensitized solar cells
Chemical reactions

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Nb2O5-based composite electrodes for dye-sensitized solar cells. / Eguchi, Koichi; Koga, Hideyuki; Sekizawa, Koshi; Sasaki, Kazunari.

In: Journal of the Ceramic Society of Japan, Vol. 108, No. 12, 01.01.2000, p. 1067-1071.

Research output: Contribution to journalArticle

Eguchi, K, Koga, H, Sekizawa, K & Sasaki, K 2000, 'Nb2O5-based composite electrodes for dye-sensitized solar cells', Journal of the Ceramic Society of Japan, vol. 108, no. 12, pp. 1067-1071.
Eguchi, Koichi ; Koga, Hideyuki ; Sekizawa, Koshi ; Sasaki, Kazunari. / Nb2O5-based composite electrodes for dye-sensitized solar cells. In: Journal of the Ceramic Society of Japan. 2000 ; Vol. 108, No. 12. pp. 1067-1071.
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