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Related Concept Videos

Photoluminescence: Applications01:14

Photoluminescence: Applications

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping
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Fluorescent Waveguide Lattices for Enhanced Light Harvesting and Solar Cell Performance.

Nannan Ding1, Ian D Hosein1

  • 1Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, New York 13244, United States.

ACS Applied Energy Materials
|June 30, 2023
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Summary

This study developed fluorescent waveguide lattices to improve solar cell efficiency by capturing a wider light spectrum. These coatings significantly boost solar cell current density, offering a promising path for enhanced clean energy generation.

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Optics

Background:

  • Solar cells have a spectral response mismatch with the solar spectrum, limiting efficiency.
  • Fluorescent down-conversion and light trapping are key strategies to enhance solar energy harvesting.

Purpose of the Study:

  • To investigate fluorescent waveguide lattices as coatings for solar cells.
  • To improve the spectral and angular response of solar cells using these novel materials.

Main Methods:

  • Photopolymerization of acrylate and silicone resins with fluorescein comonomer to create waveguide lattices.
  • Characterization of fluorescence emission, light redirection, and spectral/angular response.
  • Integration of waveguide lattices as encapsulant coatings on commercial silicon solar cells.

Main Results:

  • Waveguide lattices demonstrated bright green-yellow fluorescence via down-conversion of UV-blue light.
  • Films effectively collected light from UV-vis-NIR across a wide angular range (±70°).
  • Significant increases in solar cell current density were observed, up to 1.87 mA/cm² for dual lattices.

Conclusions:

  • Fluorescent polymer waveguide lattices enhance solar cell performance by broadening spectral and angular light collection.
  • Optimized dye concentrations and lattice structures are crucial for maximizing current generation.
  • This technology holds significant potential for advancing solar cell efficiency and clean energy production.