2D perovskite sample (IMAGE) Rice University Caption “Seasoning” the FAPbI3 precursor solution with a sprinkling of specially designed two-dimensional (2D) perovskites improved not only the efficiency of FAPbI3 solar cells but also their durability. (Photos by Jeff Fitlow/Rice University) Credit (Photos by Jeff Fitlow/Rice University) Usage Restrictions Must credit Jeff Fitlow/Rice University. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.