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Optically Transparent Gold Nanoparticles for DSSC Counter-Electrode: An Electrochemical Characterization.

Jessica Barichello1,2, Donatella Spadaro1, Sara Gullace3

  • 1IPCF-CNR, Istituto per i Processi Chimico-Fisici, Viale F. Stagno d'Alcontres 37, 98158 Messina, Italy.

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Summary

Researchers developed a transparent gold nanoparticles electrode for dye-sensitized solar cells (DSSCs). This novel electrode achieved 80% visible transmittance and demonstrated promising performance, reaching a 4.56% power conversion efficiency (PCE) with a standard electrolyte.

Keywords:
Z907cobalt electrolytedye-sensitized solar cellgold electrodenanoparticletransparent PV

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Renewable Energy

Background:

  • Transparent conductive electrodes are crucial for optoelectronic devices.
  • Gold nanoparticles offer potential advantages over traditional thin films.
  • Dye-sensitized solar cells (DSSCs) require efficient counter electrodes for charge transfer.

Purpose of the Study:

  • To synthesize and characterize a transparent gold nanoparticles electrode.
  • To compare its performance as a counter electrode (CE) in DSSCs against traditional gold film electrodes.
  • To evaluate DSSC performance using different redox mediators with the novel gold nanoparticles CE.

Main Methods:

  • Chemical reduction synthesis of gold nanoparticles.
  • Structural characterization of deposited gold layers.
  • Electrochemical studies and device performance evaluation in DSSCs.

Main Results:

  • A transparent gold nanoparticles electrode with 80% average visible transmittance was successfully realized.
  • DSSC devices with the gold nanoparticles CE achieved a maximum power conversion efficiency (PCE) of 4.56% using an I-/I3- electrolyte.
  • A PCE of 3.1% was obtained with a homemade cobalt-based electrolyte.

Conclusions:

  • Transparent gold nanoparticles electrodes are a viable alternative to gold film electrodes for DSSC applications.
  • The developed gold nanoparticles CE exhibits good optical transparency and electrochemical activity.
  • Further optimization with different electrolytes could enhance DSSC performance.