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Related Experiment Video

Updated: May 19, 2026

Integration of Light Trapping Silver Nanostructures in Hydrogenated Microcrystalline Silicon Solar Cells by Transfer Printing
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Imprinting localized plasmons for enhanced solar cells.

Ricky B Dunbar1, Thomas Pfadler, Niraj N Lal

  • 1Department of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians University (LMU) Munich, Munich, Germany.

Nanotechnology
|September 6, 2012
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Summary

Imprinted silver nanovoid arrays enhance solar cell absorption by up to 40% using plasmonic light trapping. This low-cost, scalable technique improves performance in organic solar cells.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Renewable Energy

Background:

  • Organic solar cells (OSCs) require enhanced light absorption for improved performance.
  • Plasmonic nanostructures offer a route to manipulate light within solar cell architectures.

Purpose of the Study:

  • To investigate imprinted silver nanovoid arrays for plasmonic light trapping in solar cells.
  • To demonstrate the potential of nanostructured metallic electrodes for enhanced absorption.

Main Methods:

  • Angle-resolved reflectometry was used to study nanovoid arrays.
  • Wavelength- and subwavelength-scale nanovoids were imprinted into solar cell architectures.
  • Metallic nanostructure-PCPDTBT:PCBM samples were fabricated and characterized.

Main Results:

  • Localized plasmonic modes were observed at the structured interface.
  • Absorption enhancements of up to 40% were achieved in metallic nanostructure-PCPDTBT:PCBM samples.
  • Absorption features showed independence from incident polarization and weak dependence on incident angle.

Conclusions:

  • Imprinted silver nanovoid arrays are suitable for plasmonic light trapping.
  • The technique is versatile, low-cost, scalable, and applicable to organic semiconductors.
  • Nanostructured electrodes effectively boost absorption, particularly at wavelengths where semiconductors absorb poorly.