Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Improvement of Dye-Hydrogel Based Photovoltaics via Hydroquinone Electrolyte Mediators

하이드로퀴논 전해질 중간체에 의한 염료-수화젤 기반 태양전지 효율 향상

  • KOO, HYUNG-JUN (Dept. of Chemical & Biomolecular Engineering, Seoul National University of Science and Technology)
  • 구형준 (서울과학기술대학교 화공생명공학과)
  • Received : 2016.07.23
  • Accepted : 2016.10.30
  • Published : 2016.10.30
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Abstract

Besides high-efficient photovoltaics based on silicon, polymers, dye-sensitization and hybrid perovskite materials, biomimetic solar cells inspired by a leaf in nature has also been actively studied. As one example, a hydrogel based photovoltaics (HGPV) is a low-cost, environmentally friendly device and requires easy fabrication process. In this paper, the effect of hydroquinone additive on the performance of the HGPV is discussed. The photocurrent increases ~14 times upon the addition of hydroquinone into the agarose hydrogel medium. The photocurrent increase is maximum at the optimum dye concentration, while the photovoltage is barely affected by the dye concentration. The effect of the agarose content in the hydrogel and the types of dyes on the photocurrent is also investigated. Finally, it is shown that the photovoltaic performance of HGPV with hydroquinone can be drastically improved when $TiO_2$ film is deposited on the anode electrode.

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References

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