한국분말재료학회지 (Journal of Powder Materials)

  • 제23권2호
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  • Pages.95-101
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  • 2016
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  • 2799-8525(pISSN)
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  • 2799-8681(eISSN)
한국분말재료학회 (*구 분말야금학회) (The Korean Powder Metallurgy & Materials Institute)
권호 표지
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저비용 염료감응 태양전지를 위한 방추형 Fe2O3 나노입자가 코팅된 탄소나노섬유 복합체

Spindle-shaped Fe2O3 Nanoparticle Coated Carbon Nanofiber Composites for Low-cost Dye-sensitized Solar Cells

  • 오동현 (서울과학기술대학교 신소재공학과) ;
  • 안혜란 (서울과학기술대학교 신소재공학과) ;
  • 구본율 (서울과학기술대학교 의공학-바이오소재 융합 협동과정 신소재공학프로그램) ;
  • 안효진 (서울과학기술대학교 신소재공학과)
  • Oh, Dong-Hyeun (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • An, HyeLan (Department of Materials Science and Engineering, Seoul National University of Science and Technology) ;
  • Koo, Bon-Ryul (Program of Materials Science & Engineering, Convergence Institute of Biomedical Engineering and Biomaterials, Seoul National University of Science and Technology) ;
  • Ahn, Hyo-Jin (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
  • 투고 : 2016.04.06
  • 심사 : 2016.04.25
  • 발행 : 2016.04.28
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초록

Carbon nanofiber (CNF) composites coated with spindle-shaped $Fe_2O_3$ nanoparticles (NPs) are fabricated by a combination of an electrospinning method and a hydrothermal method, and their morphological, structural, and chemical properties are measured by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. For comparison, CNFs and spindle-shaped $Fe_2O_3$ NPs are prepared by either an electrospinning method or a hydrothermal method, respectively. Dye-sensitized solar cells (DSSCs) fabricated with the composites exhibit enhanced open circuit voltage (0.70 V), short-circuit current density ($12.82mA/cm^2$), fill factor (61.30%), and power conversion efficiency (5.52%) compared to those of the CNFs (0.66 V, $11.61mA/cm^2$, 51.96%, and 3.97%) and spindle-shaped $Fe_2O_3$ NPs (0.67 V, $11.45mA/cm^2$, 50.17%, and 3.86%). This performance improvement can be attributed to a synergistic effect of a superb catalytic reaction of spindle-shaped $Fe_2O_3$ NPs and efficient charge transfer relative to the one-dimensional nanostructure of the CNFs. Therefore, spindle-shaped $Fe_2O_3$-NP-coated CNF composites may be proposed as a potential alternative material for low-cost counter electrodes in DSSCs.

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피인용 문헌

  1. Ni Nanoparticles-Graphitic Carbon Nanofiber Composites for Pt-Free Counter Electrode in Dye-Sensitized Solar Cells vol.26, pp.11, 2016, https://doi.org/10.3740/MRSK.2016.26.11.649