Most current solar cells are based on silicon, but that might be changing in the future. Graphene, a wonder material for which we keep finding new uses, is proving to have very promising qualities for converting light into electricity.
Silicon and other materials like arsenide and gallium generate a single electron for each photon absorbed. Now, new research reveals that when graphene absorbs a photon it generates multiple electrons.
Research done by the Institute of Photonic Sciences in Spain show that third-generation solar cells could, in theory, reach efficiencies in the range of 60% if graphene based cells are used.