Role of Alkali Cations in Stabilizing Mixed-Cation Perovskites to Thermal Stress and Moisture Conditions
Suresh Maniyarasu, Chun-Ren Ke, Ben F. Spencer, Alex S. Walton, Andrew G. Thomas, Wendy R. Flavell
Abstract
is not substantially incorporated into the perovskite. We suggest that the concomitant increase in ion migration barriers in the surface layers is key to improved PSC performance and long-lasting stability.
Topics & Concepts
FormamidiniumMaterials scienceIodideAlkali metalPerovskite (structure)X-ray photoelectron spectroscopyThermal stabilityMoistureMetalChemical engineeringInorganic chemistryAnalytical Chemistry (journal)Composite materialChemistryOrganic chemistryMetallurgyEngineeringPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyAdvancements in Solid Oxide Fuel Cells