Nanostructures based on butterfly wings boost solar cell performance . 08?Jul?2020 University of Oulu predicts enhanced light harvesting efficiency of Si-based photovoltaics. On the wing: light absorption A project at the Nano and Molecular Systems Research Unit ( NANOMO ) of the University of Oulu has investigated whether solar panels bearing a surface structure modeled on that of butterfly wings offer a route to improving the cells' light-harvesting performance....