Bulletin of the Korean Chemical Society

  • 제8권5호
  • /
  • Pages.362-366
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  • 1987
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  • 0253-2964(pISSN)
  • /
  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Comparisons of Stability and Spectral Response of n-Si Electrodes Modified with Polyaniline and Polypyrrole in Aqueous Solutions$^1$

  • 발행 : 1987.10.20
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초록

Modification of n-Si electrodes coated by photogalvanostatically with polyaniline and polypyrrole in aqueous solutions considerably enhanced the stability and the spectral response of the photoelectrodes. A polypyrrole coated electrode incorporated with redox couple $Fe(CN)_{6}^{3-_6}$ / $Fe(CN)_{6}^{4-_6}$ yielded a photocurrent density of 400${\mu}A/cm^2$ for about 120 hours. Broad spectral responses over 300-850 nm were observed for both polymer coated electrodes of which polypyrrole coated one showed better current conversion efficiency.

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