Electrochemical reaction rates in a dye-sensitised solar cell - The iodide/tri-iodide redox system

Lasse Bay, Keld West, Bjorn Winther Jensen, Torben Jacobsen

研究成果: Article

120 引用 (Scopus)

抄録

The electrochemical reaction rate of the redox couple iodide/tri-iodide in acetonitrile is characterised by impedance spectroscopy. Different electrode materials relevant for the function of dye-sensitised solar cells (DSSC) are investigated. Preferably, the reaction with the iodide/tri-iodide couple should be fast at the counter electrode, i.e. this electrode must have a high catalytic activity towards the redox couple, and the same reaction must be slow on the photo electrode. The catalytic activity is investigated for platinum, poly(3,4-ethylenedioxythiophene) (PEDOT), polypyrrole (PPy), and polyaniline (PANI) - all deposited onto fluorine-doped tin oxide (FTO) glass. Both Pt and PEDOT are found to have sufficiently high catalytic activities for practical use as counter electrodes in DSSC. The reaction resistance on FTO and anatase confirmed the beneficial effect of a compact anatase layer on top of the FTO glass in lowering the tri-iodide reduction rate.

元の言語English
ページ(範囲)341-351
ページ数11
ジャーナルSolar Energy Materials and Solar Cells
90
発行部数3
DOI
出版物ステータスPublished - 2006 2 25
外部発表Yes

Fingerprint

Iodides
Reaction rates
Fluorine
Electrodes
Tin oxides
Catalyst activity
Titanium dioxide
Glass
Polypyrroles
Polyaniline
Platinum
Acetonitrile
Dye-sensitized solar cells
Oxidation-Reduction
Spectroscopy
stannic oxide
titanium dioxide
poly(3,4-ethylene dioxythiophene)

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films

これを引用

Electrochemical reaction rates in a dye-sensitised solar cell - The iodide/tri-iodide redox system. / Bay, Lasse; West, Keld; Winther Jensen, Bjorn; Jacobsen, Torben.

:: Solar Energy Materials and Solar Cells, 巻 90, 番号 3, 25.02.2006, p. 341-351.

研究成果: Article

Bay, Lasse ; West, Keld ; Winther Jensen, Bjorn ; Jacobsen, Torben. / Electrochemical reaction rates in a dye-sensitised solar cell - The iodide/tri-iodide redox system. :: Solar Energy Materials and Solar Cells. 2006 ; 巻 90, 番号 3. pp. 341-351.
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N2 - The electrochemical reaction rate of the redox couple iodide/tri-iodide in acetonitrile is characterised by impedance spectroscopy. Different electrode materials relevant for the function of dye-sensitised solar cells (DSSC) are investigated. Preferably, the reaction with the iodide/tri-iodide couple should be fast at the counter electrode, i.e. this electrode must have a high catalytic activity towards the redox couple, and the same reaction must be slow on the photo electrode. The catalytic activity is investigated for platinum, poly(3,4-ethylenedioxythiophene) (PEDOT), polypyrrole (PPy), and polyaniline (PANI) - all deposited onto fluorine-doped tin oxide (FTO) glass. Both Pt and PEDOT are found to have sufficiently high catalytic activities for practical use as counter electrodes in DSSC. The reaction resistance on FTO and anatase confirmed the beneficial effect of a compact anatase layer on top of the FTO glass in lowering the tri-iodide reduction rate.

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KW - Anatase

KW - Counter electrode

KW - Dye-sensitised solar cell

KW - Impedance

KW - Iodide/tri-iodide

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