液体ポリヨウ化物を用いた色素増感太陽電池の光電流に及ぼすヨウ素含有量の影響 Influence of the Iodine Content on the Photocurrent in Dye-sensitized Solar Cells using Liquid Polyiodide

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Abstract

<p>A liquid polyiodide, composed of 1-hexyl-3-methylimidazolium iodide and iodine without any solvent, was used as a redox mediator in cis-Ru(4,4′-dicalboxyl-2,2′-bipyridine)<sub>2</sub>(thiocyanato)<sub>2</sub>-sensitized porous TiO<sub>2</sub> solar cells with varying iodine mole fractions. For iodine mole fractions below 0.5, short-circuit anodic photocurrents were observed. However, for iodine mole fractions above 0.5, short-circuit cathodic photocurrents were observed. A mechanism of the photocurrents was discussed, and it is shown that a high concentration of I<sub>3</sub><sup>−</sup> promotes the back reaction of electrons with I<sub>3</sub><sup>−</sup> on transparent conducting oxide substrates under illumination, as well as acting as a filter of incident light into solar cells.</p>

Journal

  • Electrochemistry

    Electrochemistry 70(6), 446-448, 2002-06-05

    The Electrochemical Society of Japan

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Codes

  • NII Article ID (NAID)
    10008573576
  • NII NACSIS-CAT ID (NCID)
    AN00151637
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    13443542
  • NDL Article ID
    6180080
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z17-14
  • Data Source
    CJP  NDL  J-STAGE 
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