Butterfly wing-inspired solar cells 200% more efficient
Germany and US-based scientists have reproduced nanostructures found on butterfly wings in solar cells to enhance light absorption rate by up to 200%. The black wings of 'Pachliopta aristolochiae' have nanoholes that allow absorbing light over a wide spectrum better than smooth surfaces. However, this doesn't imply the efficiency of the whole system improved by the same factor, said researchers.