Researchers at the Department of Energy's Lawrence Berkeley National Laboratory have succeeded in growing atomically thin 2D sheets of organic-inorganic hybrid perovskites from a solution. The sheets are claimed to be of high quality and large in area. 

The scientists state that this is the first example of 2D atomically thin nanostructures made from ionic materials and that the results of this study open up opportunities for fundamental research on the synthesis and characterization of atomically thin 2D hybrid perovskites and introduce a new family of 2D solution-processed semiconductors for nanoscale optoelectronic devices, such as field effect transistors and photodetectors.Source: eetimes