Abstract
This work demonstrates a method to form 1-D ethylammonium lead iodide (EAPbI3) thin-films by dimensional down-conversion of 3-D methylammonium lead iodide (MAPbI3) perovskite. The process leverages cation-exchange that occurs during exposure to ethylamine vapor and subsequent annealing. Based on the extensive materials characterization, a detailed mechanism of the transformation is proposed. The transformation also improves the morphology of the films, yielding compact EAPbI3 films with roughness of 50-100 nm, low-pin-hole density, and grain-size of 1-3 µm. The process can be used to fabricate various EAPbI3 optoelectronic devices. Since lower dimensional perovskites are more stable against moisture than MAPbI3, the process can also be used to fabricate 3D-1D graded perovskite interfaces for materials study and to stabilize MAPbI3 solar cells with a protective outer layer of EAPbI3.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
