Self-Harvesting Energy To Power Rechargeable Devices, Sensors

[Grim Reaper 6]

The researchers used one lighting source, a white LED with a color coordinate temperature of 3,000 K and an illuminance of 1,000 lux, akin to normal brightness for indoor lights, to test three different modules — a gallium indium phosphide (GaInP) semiconductor, a gallium arsenide (GaAs) semiconductor, and a silicon (Si) semiconductor. The light source peaked in intensity on the shorter wavelengths of light.

Since there is usually plenty of indoor ambient light from different sources, a ceiling light in an office environment would be enough to charge any of the mini modules that were tested, making them all viable as power sources for indoor batteries and sensors. Shore said the GaInP would require the least amount of light and still maintain high efficiency, but not all indoor light sources are LEDs.

https://scitechdaily.com/self-harvesting-energy-to-power-rechargeable-devices-sensors/