ST is excited to learn that Brown University’s Padture group has demonstrated stable perovskite material patented by ST.  See their paper in the link (https://www.nature.com/articles/s41467-018-07951-y) and the ST patent [http://www.solartecticllc.com/wp-content/uploads/2019/01/Germanium-perovskite-patent-publication.pdf] with the same material system.