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Quantum Dot-based Luminescent Solar Concentrators Fabricated through the Ultrasonic Spray-Coating Method.

Junyu Wang1, Yucheng Yuan1, Jeremy Schneider1

  • 1Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States.

ACS Applied Materials & Interfaces
|August 31, 2022
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Summary

Researchers developed a new ultrasonic spray method for fabricating high-performance quantum dot (QD)-based luminescent solar concentrators (LSCs). This scalable technique enables precise control over QD-LSC dimensions and performance for building-integrated photovoltaics.

Keywords:
clean energyluminescent solar concentratorsquantum dotssolar energyultrasonic spray-coating

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Area of Science:

  • Materials Science
  • Renewable Energy Engineering
  • Nanotechnology

Background:

  • Luminescent solar concentrators (LSCs) are wave-guiding devices for concentrating solar light onto photovoltaic cells.
  • LSCs integrated with photovoltaic devices (PVs) offer potential for net-zero-energy buildings, particularly in facade applications.
  • Scalable, adaptable, and controllable fabrication methods for LSCs are crucial for their practical implementation.

Purpose of the Study:

  • To introduce and evaluate an ultrasonic nebulization-assisted spray deposition technique for fabricating quantum dot-based LSCs (QD-LSCs).
  • To demonstrate the capability of this method for producing high-performance QD-LSCs with customizable dimensions and geometries.
  • To highlight the method's robustness in controlling thin-film quality, independent of ink concentration and volume, for performance optimization.

Main Methods:

  • Fabrication of QD-LSCs using an ultrasonic nebulization-assisted spray deposition technique.
  • Utilizing quantum dots (QDs) as the luminescent material within the LSC devices.
  • Characterization of QD-LSC performance and thin-film properties.

Main Results:

  • Successful fabrication of high-performance QD-LSCs with varying device dimensions and geometries.
  • Demonstrated independence of QD thin-film coating quality from ink concentration and volume.
  • Enabled precise programming and optimization of QD-LSC device performance.

Conclusions:

  • The ultrasonic spray coating method is a reliable and scalable technique for manufacturing high-quality QD-LSCs.
  • This method facilitates the integration of QD-LSCs into diverse applications, including building facades.
  • The developed technique supports the advancement of LSC technology for efficient solar energy harvesting.