Breakthrough in Indoor Solar Cell Technology Achieves Efficiency Exceeding 40% in Europe

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE have achieved a groundbreaking milestone by developing gallium indium phosphide (GaInP) indoor solar cells with over 40 percent efficiency, setting a new record for low-light environments. Designed to convert minimal indoor light, as low as 100 lux, into electricity, these cells are particularly suited for powering Internet of Things (IoT) devices that lack wired connections. Dr. Henning Helmers, the Head of Department, noted that III-V semiconductors significantly outperform existing technologies under LED lighting. The study highlights the superior performance of n-doped GaInP cells, enabling enhanced electricity generation in weak light conditions. This innovation is backed by multiple projects funded by various German governmental ministries and organizations, paving the way for wire-free smart technology powered by ambient light.

Breakthrough in Indoor Solar Cell Technology Achieves Efficiency Exceeding 40% in Europe

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