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<p>This work is concerned with the improvement of dye-sensitized solar cell efficiency by incorporating aurum into palladium which serves as a counter electrode (CE) for the device. The CE has been prepared via the liquid phase deposition (LPD) technique. The effect of the concentration of aurum (III) chloride trihydrate (HAuCl<sub>4</sub>.3H<sub>2</sub>O) on the properties and the performance of the device has been studied. The sources of palladium and aurum are potassium hexachloropalladate (K<sub>2</sub>PdCl<sub>6</sub>) and HAuCl<sub>4</sub>.3H<sub>2</sub>O, respectively. A dominant phase of Au–Pd exists in the sample. The morphological shape of AuPd is a truncated nanohexagon plate. The particle size of AuPd increases with the concentration of HAuCl<sub>4</sub>.3H<sub>2</sub>O, but its crystallite size decreases until an optimum concentration of 0.5&#xa0;mM. The device employing AuPd CE with 0.5&#xa0;mM HAuCl<sub>4</sub>.3H<sub>2</sub>O yielded the highest efficiency of 6.69%. This is because this device possesses the highest coverage area, highest particle density, biggest particle size, smallest crystallite size, highest IPCE, lowest <i>R</i><sub>s</sub> and <i>R</i><sub>ct</sub>, longest <i>τ</i>, highest <i>J</i><sub>pc</sub>, <i>J</i><sub>o</sub>, and <i>J</i><sub>lim</sub>. In conclusion, AuPd is found as a suitable CE candidate in efficient DSSC.</p>

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Dye-sensitized solar cells utilizing aurum-palladium bimetal film counter electrode

  • 期刊论文

  • 发表日期：

    2025年2月4日

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  • N. A. S. Aziz,
  • M. Y. A. Rahman,
  • A. A. Umar,
  • E. R. Mawarnis,
  • A. W. M. Zuhdi

摘要

This work is concerned with the improvement of dye-sensitized solar cell efficiency by incorporating aurum into palladium which serves as a counter electrode (CE) for the device. The CE has been prepared via the liquid phase deposition (LPD) technique. The effect of the concentration of aurum (III) chloride trihydrate (HAuCl4.3H2O) on the properties and the performance of the device has been studied. The sources of palladium and aurum are potassium hexachloropalladate (K2PdCl6) and HAuCl4.3H2O, respectively. A dominant phase of Au–Pd exists in the sample. The morphological shape of AuPd is a truncated nanohexagon plate. The particle size of AuPd increases with the concentration of HAuCl4.3H2O, but its crystallite size decreases until an optimum concentration of 0.5 mM. The device employing AuPd CE with 0.5 mM HAuCl4.3H2O yielded the highest efficiency of 6.69%. This is because this device possesses the highest coverage area, highest particle density, biggest particle size, smallest crystallite size, highest IPCE, lowest Rs and Rct, longest τ, highest Jpc, Jo, and Jlim. In conclusion, AuPd is found as a suitable CE candidate in efficient DSSC.