Lead-free iron-doped Cs<sub>3</sub>Bi<sub>2</sub>Br<sub>9</sub> perovskite with tunable properties
Thiri Htun, Amr Elattar, Hytham Elbohy, Kosei Tsutsumi, Kazumasa Horigane, Chiyu Nakano, Xiaoyu Gu, Hiroo Suzuki, Takeshi Nishikawa, Aung Ko Ko Kyaw, Yasuhiko Hayashi
Abstract
The bandgap of lead-free, non-toxic Cs 3 Bi 2 Br 9 perovskite material is reduced from 2.54 eV to 1.78 eV by changing the crystal structure to Cs 3 Bi 2− x Fe x Br 9 , Cs 2 Bi 1− x Fe x Br 5 , and CsFeBr 4 , depending on the varying Fe doping concentrations.
Topics & Concepts
Perovskite (structure)DopingMaterials scienceBand gapCrystal structureCrystal (programming language)CrystallographyAnalytical Chemistry (journal)ChemistryOptoelectronicsComputer scienceChromatographyProgramming languagePerovskite Materials and Applications2D Materials and ApplicationsSolid-state spectroscopy and crystallography