Surface stability of ionic-liquid-passivated mixed-cation perovskite probed with<i>in situ</i>photoelectron spectroscopy
Suresh Maniyarasu, Ben F. Spencer, Hongbo Mo, Alex S. Walton, Andrew G. Thomas, Wendy R. Flavell
Abstract
A passivation treatment is proposed that improves perovskite photovoltaic device performance and stability to annealing in dry environments. A rationale is presented for the observed loss of stability on heating in wet environments.
Topics & Concepts
PassivationX-ray photoelectron spectroscopyAnnealing (glass)Materials scienceIn situPerovskite (structure)Chemical engineeringIonic bondingIonic liquidPhotovoltaic systemNanotechnologyChemistryIonComposite materialCatalysisLayer (electronics)Electrical engineeringOrganic chemistryEngineeringPerovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films