University of New South Wales, Australia, Dec. 2, 2016, by Wilson Da Silva.
http://newsroom.unsw.edu.au/news/science-tech/trendy-solar-cells-hit-new-world-efficiency-record

"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, UNSW engineers have smashed the world efficiency record."