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

  • 제28권1호
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  • Pages.63-69
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  • 2017
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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염료 감응형 태양전지 효율에 미치는 백금 상대 전극 제조공정의 영향

Effects of Deposition Method of Thermally Decomposed Platinum Counter Electrodes on the Performance of Dye-Sensitized Solar Cells

  • 서현우 (홍익대학교 재료공학부) ;
  • 백현덕 (홍익대학교 재료공학부) ;
  • 김동민 (홍익대학교 재료공학부)
  • SEO, HYUN WOO (Department of Materials science Engineering, Hongik University) ;
  • BAEK, HYUN DUK (Department of Materials science Engineering, Hongik University) ;
  • KIM, DONG MIN (Department of Materials science Engineering, Hongik University)
  • 투고 : 2017.01.04
  • 심사 : 2017.02.28
  • 발행 : 2017.02.28
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초록

In this work, two different platinum (Pt) counter electrodes have been prepared by spin coating a Pt solution and screen printing a Pt paste on fluorine doped tin oxide (FTO) glass substrate followed by sintering at $380^{\circ}C$ for 30 min. Linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) analyses of the Pt electrodes showed that the spin coated electrode was catalytically more active than the screen printed electrode. The above result agrees well with the surface morphology of the electrodes studied by atomic force microscopy (AFM) and the photovoltaic performance of the dye-sensitized solar cells (DSSCs) fabricated with the Pt electrodes. Moreover, calculation of current density-voltage (j-V) curves according to diode model with the parameters obtained from the experimental j-V curves and the EIS data of the DSSCs provided a quantitative insight about how the catalytic activity of the counter electrodes affected the photovoltaic performance of the cells. Even though the experimental situations involved in this work are trivial, the method of analyses outlined here gives a strong insight about how the catalytic activity of a counter electrode affects the photovoltaic performance of a DSSC. This work, also, demonstrates how the photovoltaic performance of DSSCs can be improved by tuning the performance of counter electrode materials.

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참고문헌

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