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Updated: Mar 28, 2026

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Dual Functional TiO2-Au Nanocomposite Material for Solid-State Dye-Sensitized Solar Cells.

A Pandikumar, S Suresh, S Murugesan

    Journal of Nanoscience and Nanotechnology
    |December 31, 2015
    PubMed
    Summary

    Titanium dioxide-gold nanocomposites in polymer electrolytes significantly boost dye-sensitized solar cell efficiency. Incorporating gold nanoparticles into both the photoanode and electrolyte enhances charge transfer and energy conversion.

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    Area of Science:

    • Materials Science
    • Nanotechnology
    • Renewable Energy

    Background:

    • Dye-sensitized solar cells (DSSCs) are a promising renewable energy technology.
    • Solid-state electrolytes offer advantages over liquid electrolytes in DSSCs.
    • Improving charge transfer and transport is crucial for enhancing DSSC performance.

    Purpose of the Study:

    • To develop and evaluate titanium dioxide-gold nanocomposite materials for solid-state electrolytes in DSSCs.
    • To investigate the impact of gold nanoparticles on the photoanode and electrolyte performance.
    • To compare the efficiency of DSSCs with modified components against unmodified systems.

    Main Methods:

    • Fabrication of dye-sensitized solar cells using titanium dioxide-gold nanocomposite ((TiO2-Au)(nps)) materials dispersed in poly(diallyldimethylammonium chloride) (PDDA) polymer electrolyte.
    • Utilization of nanocrystalline TiO2 nanoparticle (P25) or (P25-Au)(nps) thin film photoanodes adsorbed with nickel-phthalocyanine (NiPcTs) dye sensitizer.
    • Evaluation of photocurrent-photovoltage characteristics under standard AM 1.5 G simulated solar irradiation (100 mW/cm2).

    Main Results:

    • The (TiO2-Au)(nps) nanocomposite in the PDDA electrolyte improved interfacial charge transfer, reduced polymer crystallinity, and enhanced triiodide (I3-) redox couple mobility.
    • This resulted in a six-fold increase in solar-to-electrical energy conversion efficiency compared to DSSCs with unmodified polymer electrolytes.
    • Replacing the P25 photoanode with a (P25-Au)(nps) photoanode yielded an additional eight-fold efficiency increase due to improved charge transport.

    Conclusions:

    • Titanium dioxide-gold nanocomposites are effective in enhancing the performance of solid-state DSSCs.
    • The strategic incorporation of gold nanoparticles into both the photoanode and electrolyte significantly boosts overall energy conversion efficiency.
    • These findings highlight the potential of nanocomposite materials for advancing solar cell technology.