News #18 / 2025
Indoor photovoltaics with over 40 percent efficiency developed

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE have succeeded in developing solar cells based on III-V semiconductors that can achieve an efficiency of over 40 percent indoors. By the optimized design and improved quality of the solar cell absorber material , the research team achieved remarkably high efficiencies even under very low light conditions of just 100 lux. This result makes this technology particularly attractive for autonomous Internet of Things (IoT) applications that operate indoors without an external wired power supply. The findings were published in the journal Applied Physics Letters.
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