Government agencies using solar power may soon be ditching their panels in favor of paint brushes. Researchers at the University of Notre Dame’s Center for Nano Science and Technology (NDnano) have developed a “solar paint” that can be applied on to a conductive surface, such as transparent conducting glass or plastic, that turns the energy of the sun into electricity.
The project consisted of taking nano-sized particles of titanium dioxide, coating them with either cadmium sulfide or cadmium selenide and suspending them in a water-alcohol mixture to create the paint. The semiconducting nanoparticles — called quantum dots — were mixed into a one-coat spreadable paste that can generate power, without using any special equipment.