Chemists have developed materials that enhance the performance of solar elements designed for indoor use

Scientists at Kaunas University of Technology (KTU) in Lithuania have developed materials that enhance solar elements for indoor use. These photovoltaic cells have the ability to generate electricity even in low-light conditions and can be integrated into electronic devices. Recognizing the need for renewable energy sources due to the climate crisis, the researchers aim to capture indoor light sources and natural light entering through windows that are currently being wasted.

To fill the market gap for efficient indoor photovoltaic cells, a team of experts at KTU's Chemistry of Materials research group has taken significant strides. Dr. Asta Dabulienė, a senior researcher in the group, has successfully synthesized a range of hole-transporting thiazol[5,4-d]thiazole derivatives for indoor perovskite photovoltaic cells. These derivatives selectively transport positive charges, reducing recombination losses and improving overall solar cell efficiency.

Collaborating with Ming Chi University of Technology in Taiwan, the team achieved a power conversion efficiency of 37.0% in perovskite solar cells for indoor use under specific illumination conditions. Notably, the success of this research is the outcome of an international effort. The Chemistry of Materials research group at KTU has researchers from various countries, such as Lithuania, Ukraine, India, Pakistan, Armenia, Egypt, and Nigeria. Additionally, they have received project invitations from colleagues in the UK and Germany.

Professor J.V. Gražulevičius, the head of the research group, underlines the value of international cooperation in expanding project activities. Working with diverse cultures and experiences brings new ideas and innovative solutions to the table, as each team member enriches the collective knowledge and skill set. However, effective communication, cultural understanding, and organizational coordination are vital for achieving common objectives amidst these global collaborations.

The effort put forth by the international team highlights the immense potential of indoor solar cells. With continuous advancements in materials and technology, indoor photovoltaic cells have a promising future in powering various electronic devices and optimizing energy consumption. As the research progresses, the hope is to accelerate the development and adoption of renewable energy sources, contributing to a more sustainable and environmentally-friendly future.

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