Near field distribution of multishaped Ag nanoparticles as a function of excitation radiation in water medium.
Project data
Authors Joshua M. Pearce
Completed 2021
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Dye sensitized solar cells (DSSCs) have numerous advantages, but in order to use widespread industrial deployment we need to boost the power conversion efficiency. One promising approach to improve DSSC performance is to improve the spectral response of sensitizers with metal nanoparticle-based surface plasmon resonance. Even single shaped nanoparticles (NPs), however, have physical limitations. Thus, in this study a simple synthesis route is used to fabricate multishaped silver (Ag) NPs to create a coupled plasmonic effect in DSSC to cover more of the solar spectrum. The impact of multishaped AgNPs combinations are studied to determine which aspects improve the power conversion efficiency of DSSC. A detailed investigation was made of both the TiO2 (XRD) and AgNPs (UV-Vis spectrometry) to couple the impacts on the DSSC (I-V) with the combination of the morphologies (TEM and FESEM) of AgNPs. Synthesized AgNPs with distinct extinction cross section covers the visible and IR regime from 300 nm to 1100 nm by tuning its plasmonics band. It is inferred that multi-shaped AgNPs predominately enhance the light harvesting, charge separation and carrier transportation. The results show that the increment in short circuit current and open circuit voltage resulted in an increase of 45% overall power conversion efficiency in the standard DSSC device is attributed to the usage of multi-shaped AgNPs. Finally, a mechanism is proposed to support the outcome of the experiment by demonstrating the extinction cross section and the local field of the various shaped AgNPs using Finite-difference time-domain (FDTD) simulation.

Source

  • R. Selvapriya, T. Abhijith, V. Ragavendran, V. Sasirekha, V.S. Reddy, J.M. Pearce, J. Mayandi,Impact of Coupled Plasmonic Effect with Multishaped Silver Nanoparticles on Efficiency of Dye Sensitized Solar Cells, Journal of Alloys and Compounds,2021,894, 162339, https://doi.org/10.1016/j.jallcom.2021.162339. academia

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Page data
Part of FAST Completed
Type Project
Keywords photovoltaic, dye-sensitized solar cell, plasmonic photovoltaics, power conversion efficiency, surface plasmon resonance, multishaped ag nanoparticles, local field enhancement, materials, materials processing, photovoltaics
SDG Sustainable Development Goals SDG7 Affordable and clean energy, SDG12 Responsible consumption and production, SDG13 Climate action
Authors Joshua M. Pearce
Published 2021
License CC-BY-SA-4.0
Affiliations Free Appropriate Sustainable Technology, Western
Impact Number of views to this page and its redirects. Updated once a month. Views by admins and bots are not counted. Multiple views during the same session are counted as one. 22
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