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査読

129 被引用数 (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.

本文言語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
3
DOI
出版ステータスPublished - 2006 2 25
外部発表はい

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 電子材料、光学材料、および磁性材料
  • 表面、皮膜および薄膜

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