LightCell: A Revolutionary Light-Powered Engine

LightSail Energy is developing a revolutionary engine called LightCell that generates electricity using monochromatic light emitted from hot sodium produced by burning hydrogen or other fuels. This engine cleverly combines thermophotovoltaics, an optical cavity, and a ceramic heat exchanger to recycle waste heat, achieving up to 40% energy conversion efficiency. The core technology utilizes 2.1eV photons from sodium atomic transitions, captured efficiently by precisely designed bandgap-tuned photovoltaic cells. LightCell boasts high energy density, low noise, and modularity, promising a breakthrough in future energy.