Probing atomic structure of beam-sensitive energy materials in their native states using cryogenic transmission electron microscopes.

ABSTRACT: Organic-inorganic hybrid perovskite nanoplatelets (NPLs) have emerged as promising materials for solar energy. However, the structural instability under electron beam hinders further probing and understanding of its crystalline structures and defects at the atomic scale. Taking methylammonium bromide perovskite methylammonium lead bromide (CH₃NH₃PbBr₃ (MAPbBr₃)) perovskite NPLs as model material, we performed atomic-scale characterization of the native state of the hybrid perovskite solar cell material in different states using ultra-low-dose cryo-TEM imaging. With a series of observation at different growth time, we revealed the growth pattern of such MAPbBr₃ material from an initially stacked slices with rotational moiré fringes to a

SUBMITTER: Zhu Y 

PROVIDER: S-EPMC8605250 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature