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Electrospinning of Photocatalytic Electrodes for Dye-sensitized Solar Cells
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Stability Modification of Dye-sensitized Solar Cells by Ruthenium Dyes Embedded on Eggshell Membranes.

Naoki Tanifuji1, Takeshi Shimizu1, Akihiro Shimizu2

  • 1Chemistry and Biochemistry Division, Department of Integrated Engineering, National Institute of Technology, Yonago College, 4448 Hikona-cho, Yonago 683-8502, Tottori, Japan.

Materials (Basel, Switzerland)
|October 28, 2023
PubMed
Summary

Eggshell-TiO2 composites stabilize dye-sensitized solar cells (DSSCs). This innovation prevents voltage loss from dye degradation under light, enhancing long-term photovoltaic performance.

Keywords:
dye-sensitized solar celleggshell membraneelectrostatic interaction

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Photovoltaics

Background:

  • Dye-sensitized solar cells (DSSCs) offer promising solar energy conversion.
  • N719 dye, a common DSSC component, suffers voltage drop due to NCS ligand detachment under UV light.
  • This instability limits the long-term performance of DSSCs.

Purpose of the Study:

  • To develop a novel DSSC with enhanced stability.
  • To investigate the use of Eggshell (ESM)-TiO2 composites for dye immobilization.
  • To improve the long-term photovoltaic performance of DSSCs by protecting dye ligands.

Main Methods:

  • Fabrication of a composite material using N719 dye adsorbed onto an Eggshell (ESM)-TiO2 structure.
  • Immobilization of N719 dye on TiO2 via electrostatic interactions with ESM proteins.
  • Testing the photovoltaic performance and stability of the fabricated DSSC under prolonged light irradiation.

Main Results:

  • The DSSC utilizing the ESM-TiO2 composite demonstrated stable voltage output even after 12 hours of light exposure.
  • In contrast, DSSCs without ESM exhibited a significant voltage drop under similar conditions.
  • The ESM component effectively protected the NCS ligands of the N719 dye from degradation.

Conclusions:

  • Eggshell-derived materials can enhance the stability of dye-sensitized solar cells.
  • The electrostatic interaction between ESM and N719 dye provides a protective mechanism against ligand detachment.
  • This approach offers a viable strategy for improving the durability and reliability of DSSCs for practical applications.