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Investigations on Organic Push-Pull Dyes for Luminescent Solar Concentrator Applications
Roberto Bondi1, Antonino Arrigo2, Ejdi Cela3
1Nano4Light Lab, Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia 06123, Italy.
ACS Applied Optical Materials
|April 2, 2026
Summary
Researchers investigated three novel dyes as luminescent solar concentrators (LSCs) integrated into polyacrylate panels. Compound 3 demonstrated the highest photoluminescence quantum yield (PLQY) and best photovoltaic performance, showing promise for LSC applications.
Area of Science:
- Materials Science
- Photovoltaics
- Organic Chemistry
Background:
- Renewed interest in luminescent solar concentrator (LSC) materials for building-integrated and urban photovoltaic (PV) technologies.
- LSCs offer potential for efficient light harvesting and integration into various surfaces.
Purpose of the Study:
- To investigate three push-pull dyes with anthracene or benzothiadiazole chromophores as luminophores for polyacrylate-based LSCs.
- To analyze the impact of medium polarity and matrix stiffening on dye photophysical properties.
- To correlate photophysical characteristics with photovoltaic performance of the LSCs.
Main Methods:
- Optical and luminescence characterization of dyes in solution and polyacrylate panels.
- Evaluation of photoluminescence quantum yield (PLQY), decay times, and radiative/nonradiative rates.
- Assessment of photovoltaic performance by integrating dye panels with silicon PV devices.
Main Results:
- Photophysical parameters, including PLQY, are influenced by medium polarity and matrix stiffening.
- Compound 3, a benzothiadiazole-based dye, achieved the highest PLQY (81%).
- Compound 3-based LSC panels yielded the highest PV light-to-energy conversion efficiency (2.8%).
Conclusions:
- The study provides a correlated examination of photophysical properties and LSC performance.
- Dye architecture significantly impacts LSC efficiency.
- The findings are relevant for designing high-efficiency chromophores for LSC applications.
