Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Flexible Dye-sensitized Solar Cell Using Titanium Gel at Low Temperature

저온 티타늄 겔을 이용한 플렉시블 염료감응형 태양전지

  • Ji, Seung Hwan (Department of Energy Engineering, Dankook University) ;
  • Park, Hyunsu (Department of Energy Engineering, Dankook University) ;
  • Kim, Doyeon (Department of Energy Engineering, Dankook University) ;
  • Han, Do Hyung (Department of Energy Engineering, Dankook University) ;
  • Yun, Hye Won (Department of Energy Engineering, Dankook University) ;
  • Kim, Woo-Byoung (Department of Energy Engineering, Dankook University)
  • 지승환 (단국대학교 에너지공학과) ;
  • 박현수 (단국대학교 에너지공학과) ;
  • 김도연 (단국대학교 에너지공학과) ;
  • 한도형 (단국대학교 에너지공학과) ;
  • 윤혜원 (단국대학교 에너지공학과) ;
  • 김우병 (단국대학교 에너지공학과)
  • Received : 2018.12.06
  • Accepted : 2019.01.18
  • Published : 2019.03.27
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Abstract

Flexible dye-sensitized solar cells using binder free $TiO_2$ paste for low temperature sintering are developed. In this paste a small amount of titanium gel is added to a paste of $TiO_2$ nanoparticle. Analysis of titanium gel paste prepared at $150^{\circ}C$ shows that it has a pure anatase phase in XRD and mesoporous structure in SEM. The formation of the titanium gel 1-2 nm coated layer is confirmed by comparing the TEM image analysis of the titanium gel paste and the pristine paste. This coating layer improves the excited electron transfer and electrical contact between particles. The J-V curves of the organic binder DSSCs fabricated at $150^{\circ}C$ shows a current density of $0.12mA/cm^2$ and an open-circuit voltage of 0.47 V, while the titanium gel DSSCs improves electrical characteristics to $5.04mA/cm^2$ and 0.74 V. As a result, the photoelectric conversion efficiency of the organic binder DSSC prepared at low temperature is as low as 0.02 %, but the titanium gel paste DSSCs has a measured effciency of 2.76 %.

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References

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