TiO2-nanotube-based dye-sensitized solar cells containing fluorescent material

Woong Rae Kim, Young Joon Lee, Hun Park, Jae Joon Lee, Won Youl Choi

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We fabricated a dye-sensitized solar cells (DSCs) with TiO2 nanotube arrays obtained by anodization of Ti foil. Vertical structure of TiO2 nanotube arrays is very attractive due to a high electron transfer from dye to electrode. To improve the power conversion efficiency, fluorescent material, F-6377, was applied in TiO2-nanotube-based DSCs to use a light spectrum efficiently. Fluorescent material was absorbed the different wavelength of 460 nm from the light absorbed by N719 dye. Fluorescent material to emit the absorbed light energy provided an additional light for dye in DSCs and additional electrons was generated. Thickness of TiO2 nanotube arrays grown by anodic oxidation was 15 μm. N719 dye and I3 -/I- electrolyte were used to fabricate the DSCs. The short circuit current densities (Jsc) and the power conversion efficiency in DSCs with fluorescent were 10.8 mA/cm2 and 2.48%, respectively. Electrochemical impedance spectroscopy (EIS) was observed to understand an electron transfer and life time.

Original languageEnglish
Pages (from-to)3487-3490
Number of pages4
JournalJournal of Nanoscience and Nanotechnology
Volume13
Issue number5
DOIs
StatePublished - May 2013

Keywords

  • Dye-sensitized solar cells
  • Fluorescent
  • Power conversion efficiency
  • TiO nanotube arrays

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