Gliding epitaxy for inorganic space-power sheets

Artificial satellites depend on solar panels to generate electricity, but traditional photovoltaic (PV) panels have drawbacks—they are large, heavy due to a thick protective coverglass that shields them from radiation, and they are also costly.

The GLISS project aims to revolutionize satellite solar power with a new technology that is radiation-resistant, lightweight, flexible, and more affordable. It focuses on developing ultra-thin (<100 nm) photovoltaic systems using advanced III-V solar cells with a quantum-confined structure. The project also introduces an innovative "gliding epitaxy" technique, which allows the delicate crystalline films to be released from their growth wafers. By making PV systems thinner and lighter, GLISS aims to reduce costs, enable new satellite designs and hybrid devices, and contribute to the sustainable development of solar energy on a global scale.