Unraveling the 3D Architecture of Perovskite Supercubes: Insights into Structure-Property Relationships

Perovskite nanocrystals exhibit excellent optoelectronic properties, making them promising for applications in LEDs and solar cells. Dense packing of these materials is crucial for such uses. This proposal seeks to use Small-Angle X-ray Scattering (SAXS) at ID02 to study the 3D structure of micrometer-sized cubic perovskite superstructures, or supercubes (SCs). SCs are mesoscale materials formed by the self-assembly of CsPbBr3 nanocubes. We will examine their structural properties based on parameters like solvent and ligand type. The aim is to analyze interparticle distances, crystalline order, and arrangement of nanoparticles within SCs to better understand their assembly and link the SC structure to its optical properties, influenced by interactions between the nanocubes.