High-efficiency liquid luminescent solar concentrator based on CsPbBr₃ quantum dots

Area of Science:

• Materials Science
• Renewable Energy
• Nanotechnology

Background:

• Conventional polymer luminescent solar concentrators (LSCs) face challenges with performance degradation.
• Liquid LSCs (L-LSCs) present a polymerization-free fabrication approach as a potential alternative.

Purpose of the Study:

• To develop and evaluate a CsPbBr3 quantum dots (QDs)-based liquid luminescent solar concentrator (L-LSC).
• To assess the optical and photo-electrical performance of the fabricated L-LSC for solar light harvesting.

Main Methods:

• Fabrication of L-LSC by injecting CsPbBr3 QDs solution into a self-assembly quartz glass mold.
• Optical characterization and photo-electrical measurements to evaluate L-LSC performance.
• Coupling the L-LSC with a commercial solar cell to determine optical efficiency.

Main Results:

• The fabricated L-LSC achieved an external quantum efficiency of up to 13.44%.
• The optimal optical efficiency reached 2.32% after coupling with a commercial solar cell.
• Demonstrated the potential of QDs-based L-LSCs for enhanced solar energy capture.

Conclusions:

• CsPbBr3 QDs-based L-LSCs offer a promising direction for advanced solar light harvesting.
• The polymerization-free fabrication method overcomes limitations of conventional LSCs.
• L-LSCs show potential for efficient and stable solar energy conversion.