Direct observation of phase transitions between delta- and alpha-phase FAPbI<sub>3</sub><i>via</i> defocused Raman spectroscopy
Bernd K. Sturdza, Benjamin M. Gallant, Philippe Holzhey, Elisabeth A. Duijnstee, M. W. von der Leyen, Harry C. Sansom, Henry J. Snaith, Moritz Riede, R. J. Nicholas
Abstract
Defocused Raman spectroscopy is used to assess the phase stability of semiconducting perovskites, preventing laser-induced damage and simultaneously improving the signal-to-noise ratio.
Topics & Concepts
Raman spectroscopySpectroscopyPhase (matter)Materials scienceDeltaLaserOpticsAnalytical Chemistry (journal)Alpha (finance)PhysicsChemistryPatient satisfactionAstronomyQuantum mechanicsChromatographyNursingConstruct validityMedicinePerovskite Materials and ApplicationsChalcogenide Semiconductor Thin FilmsOptical properties and cooling technologies in crystalline materials