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Effect of Tungsten Doping on the Properties of Titanium Dioxide Dye-Sensitized Solar Cells

Author

Listed:
  • Ming-Cheng Kao

    (Department of Information and Communication Engineering, Graduate Institute of Aeronautics, Chaoyang University of Technology, Taichung 413310, Taiwan)

  • Jun-Hong Weng

    (Department of Electrical Engineering, Tunghai University, Taichung 413310, Taiwan)

  • Chih-Hung Chiang

    (Department of Aeronautical Engineering, Graduate Institute of Aeronautics, Chaoyang University of Technology, Taichung 413310, Taiwan)

  • Kai-Huang Chen

    (Department of Electronic Engineering, Cheng Shiu University, Kaohsiung 83347, Taiwan)

  • Der-Yuh Lin

    (Department of Electronic Engineering, National Changhua University of Education, Changhua 50074, Taiwan)

  • Tsung-Kuei Kang

    (Department of Electronic Engineering, Feng Chia University, Taichung 407102, Taiwan)

Abstract

Tungsten-doped TiO 2 thin films were prepared by sol–gel method on fluorine-doped tin oxide-coated substrates as working electrodes of dye-sensitized solar cells. The influences of different W doping (0, 2, 4, 6, and 8 at%) on the microstructure, optical, and photovoltaic properties of the W-TiO 2 thin-film DSSCs were studied by the measurement of X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) analysis, and electrochemical impedance spectroscopy (EIS). An optimal DSSCs performance was observed with a 6 at% W-doped TiO 2 thin film, resulting in a Voc of 0.68 V, a Jsc of 20.2 mA/cm 2 , an FF of 68.6%, and an efficiency (η) of 9.42%. The efficiency of DSSCs with 6 at% W-doped TiO 2 photoanode improved by 75%. This is because the 6 at% W-doped TiO 2 thin film increases the specific surface area and electron transfer rate.

Suggested Citation

  • Ming-Cheng Kao & Jun-Hong Weng & Chih-Hung Chiang & Kai-Huang Chen & Der-Yuh Lin & Tsung-Kuei Kang, 2024. "Effect of Tungsten Doping on the Properties of Titanium Dioxide Dye-Sensitized Solar Cells," Energies, MDPI, vol. 17(20), pages 1-11, October.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:20:p:5118-:d:1499048
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