Aluminum plasmonic nanoparticles enhanced dye sensitized solar cells

Area of Science:

• Materials Science
• Renewable Energy
• Nanotechnology

Background:

• Dye-sensitized solar cells (DSCs) are a promising photovoltaic technology.
• Enhancing optical absorption is crucial for improving DSC performance.
• Plasmonic nanoparticles offer potential for light scattering and absorption enhancement.

Purpose of the Study:

• To investigate the use of plasmonic aluminum (Al) nanoparticles (NPs) for enhancing optical absorption in DSCs.
• To evaluate the impact of Al NPs on the performance and stability of DSCs.
• To explore the role of localized surface plasmon (LSP) effects and work function in Al NP-enhanced DSCs.

Main Methods:

• Incorporation of Al NPs into TiO₂ anodes of DSCs.
• Characterization of optical absorption enhancement using LSP effects.
• Assessment of chemical stability in iodide/triiodide electrolyte.
• Electrochemical impedance spectroscopy (EIS) for performance analysis.

Main Results:

• Al NPs demonstrated light absorption enhancement via LSP.
• Al NPs showed good chemical stability with the electrolyte.
• Lower work function of Al NPs potentially suppressed charge transfer quenching.
• Incorporation of high concentrations of Al NPs improved power conversion efficiency (PCE) by nearly 13%.
• EIS indicated improved electrochemical performance in plasmonic DSCs with Al NPs.

Conclusions:

• Plasmonic Al NPs effectively enhance optical absorption and PCE in DSCs.
• Al NPs offer a stable and efficient solution for improving solar cell performance.
• The LSP effect and favorable work function of Al NPs contribute to reduced energy losses and improved device efficiency.