A new solar cell developed by a team of Chinese scientists may change the way we use solar panels. Invention of solar power was a great step forward in the world of alternative energy sources. However this type of conventional power has always posed one concern: solar cells produce no power when it's raining. Chinese scientists have found the way to create electricity with the assistance of raindrops – they coated a solar cell with a thin film of graphene. A graphene layer reacts with ions in the rain to generate energy. When a raindrop contacts with a graphene, the water becomes enriched in positive ions and the graphene becomes enriched in delocalized electrons. The difference in potential is sufficient to produce a current and voltage.