2D Perovskite Thin Film Grown from Seeds (IMAGE) Rice University Caption A thin film of 2D halide perovskite crystals of uniform thickness. Rice engineers discovered a self-assembly method for producing the films from "seeds," submicroscopic pieces of 2D crystals that serve as templates. Credit Photo by Jeff Fitlow/Rice University Usage Restrictions Must credit: "Jeff Fitlow/Rice University" License Licensed 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.