Kaunas University of Technology Develops Advanced Indoor Solar Cells to Maximise Energy Use

Chemists at Kaunas University of Technology (KTU) in Lithuania have developed new materials that enhance indoor solar cells, making them efficient even in low-light conditions. These photovoltaic cells can be integrated into various electronic devices, offering a versatile energy solution.

This advancement is part of a broader effort to address the climate crisis caused by rising temperatures from oil and gas consumption. The new indoor solar technology, resulting from international collaboration, includes organic semiconductors that effectively transport positive charges. The theoretical studies were conducted by scientists from King Abdullah University of Science and Technology in Saudi Arabia, while Ming Chi University of Technology in Taiwan contributed by constructing and characterising perovskite solar cells for indoor use. 

It may be noted that with rapidly evolving IoT technologies, the demand for indoor photovoltaic cells is also surging. To address this market expansion, high-performance, affordable, and adaptable indoor PV cells are essential.

"Wind and hydro energy face limitations due to high costs and location dependency, whereas solar energy offers flexibility, efficiency, and relative affordability. Nonetheless, the energy from indoor light sources and natural light entering through windows is wasted daily," says Juozas Vidas Grazulevicius, Professor at the KTU Faculty of Chemical Technology and Head of the Chemistry of Materials research group.

According to Prof. Grazulevicius, this can be solved by indoor photovoltaics, which generate electricity even in low-intensity light conditions.

"Different cultures and experiences help to generate new ideas and innovative solutions, and each team member brings unique knowledge and skills that enrich the overall range of competencies. Working with people who speak different languages allows us to improve international communication and promote language skills, while different working cultures promote greater flexibility and adaptability to different situations," noted Prof. Grazulevicus.