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

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.