Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Synthesis of Zr-incorporated TiO2 Using a Solvothermal Method and its Photovoltaic Efficiency on Dye-sensitized Solar Cells

  • Kim, Su-Jung (Department of Chemistry, College of Science, Yeungnam University) ;
  • Kang, Mi-Sook (Department of Chemistry, College of Science, Yeungnam University)
  • Received : 2011.05.17
  • Accepted : 2011.07.20
  • Published : 2011.09.20
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Abstract

This study examines the photoelectric conversion efficiency of dye-sensitized solar cells (DSSCs) when nanometer-sized Zr (0.1, 0.5, and 1.0 mol %)-$TiO_2$ prepared using a solvothermal method is utilized as the working electrode material. The particle sizes observe in the transmission electron microscopy (TEM) images are < 30 nm in all samples. The absorption band is slightly broadened at the tail for the 0.1 mol % Zr-$TiO_2$, and the intensity of the photoluminescence (PL) curves of the Zr-incorporated $TiO_2$ is significantly smaller than that of the pure $TiO_2$. Compared to that using pure $TiO_2$, the energy conversion efficiency is enhanced considerably by the application of Zr-$TiO_2$ in the DSSCs to approximately 6.17% for 0.5 mol % Zr-$TiO_2$ with the N719 dye (10.0 ${\mu}m$ film thickness and 5.0 mm ${\times}$ 5.0 mm cell area) under 100 mW/$cm^2$ of simulated sunlight.

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