Direction-selective electron beam damage to CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> based on crystallographic anisotropy
Tae Woong Kim, Takashi Kondo
Abstract
We report that the organometal halide perovskite is selectively damaged by an electron beam depending on its irradiation direction. Using transmission electron microscopy investigation, we have confirmed that CH3NH3PbI3 single crystals are highly tolerant to [] electron beam irradiation while they are easily damaged by [] electron irradiation. We have shown that the direction selectivity of the electron beam damage through the decomposition of the organic components in CH3NH3PbI3 crystals is consistent with the crystallographic arrangement of organic and iodide ions in the crystal.
Topics & Concepts
Transmission electron microscopyIodideAnisotropyElectron beam processingHalideIrradiationElectron diffractionMaterials scienceCrystal (programming language)CrystallographyDecompositionElectronCrystal structureCathode rayPerovskite (structure)IonBeam (structure)SelectivityChemistryOpticsDiffractionInorganic chemistryNanotechnologyPhysicsCatalysisBiochemistryComputer scienceQuantum mechanicsProgramming languageOrganic chemistryNuclear physicsPerovskite Materials and ApplicationsSolid-state spectroscopy and crystallographyChalcogenide Semiconductor Thin Films