COPPER INDIUM GALLIUM SELENIDE

Solar Panels on the Mars Exploration Rover Contained Gallium Arsenide

Let's cut to the chase: gallium arsenide solar cells powered NASA's rovers through Martian dust storms that would've killed ordinary panels. While your rooftop silicon panels tap out at 22% efficiency, these space-grade marvels hit 34% – and that's not even their main advantage. The real kicker? They laugh in the face of cosmic radiation.