They're flexible, cheap to produce and simple to make - which is why perovskites are the hottest new material in solar cell design. And now, engineers at Australia's University of New South Wales in Sydney have smashed the .
Researchers believe that in coming years solar power could become even more efficient and cheaper than it is now. While most solar cells today are made from silicon a key area to watch is the development of new materials for solar cells. One of the most promising of these is a family of crystals known as perovskites. Certain perovskites are very good at absorbing light and have been shown to have a power conversion efficiency of 22 per cent on par with traditional silicon cells.