Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.584
Publication date: 16th December 2024
Semi-transparent organic photovoltaics (ST-PV) have gathered significant attention due to the unique ability to simultaneously convert sunlight into electricity while allowing visible light transmission, together with their ultra-light weight, flexibility, and process scalability. With this, potential applications such as agrovoltaics, photovoltaic windows or building faceds have been highlighted by researchers and industry.
Microalgae are photosynthetic microorganisms that are able to convert light and nutrients into biomass made of various valuable molecules such as lipids and proteins for the production of sustainable advanced fuels (SAF). In the context of COCPIT project (https://www.cocpit-horizon.eu/https://www.cocpit-horizon.eu/), microalgae biomass productivity could be maximized using thin film photobioreactor (PBR) in solar conditions such as the AlgoFilm technology. Optimization of the use of the sunlight collected at the culture system surface, by filtering the NIR and IR spectrum with a ST-PV, is considered to prevent PBR overheating, while enabling the dual valorisation of solar spectrum for both biomass and electricity production.
In this work, different active layer blends have been proposed to adapt and complement the ST-PV absorbance spectrum of Parachlorella kessleri (i.e. green microalga known for its interest in SAF production) absorbance spectra requirements. Lab-scale OPV devices were fabricated using a scalable deposition technique such as slot-die. Tests were first performed in terms of efficiency and transparency and further evaluated in combination with 6 lab-scale PBRs in parallel. The selection of the final active layer was based on a compromise between transparency, efficiency and microalgae productivity.
This project has received funding from the European Union’s Horizon Europe Research and Innovation Programme under Grant Agreement No. 101122101. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union. Neither the European Union nor the granting authority can be held responsible for them
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