Design Strategies for Epitaxial Metal(0)–Halide Perovskite Nanocrystal Heterostructures

Abstract

heterostructures having metallic as well as covalent bond interfaces which can develop new properties as well as bring stability, as desired by us all.

Halide Perovskite Nanocrystals for Shaping Pt Nanostructures

“…Halide perovskite nanocrystals are widely studied in recent years for their bright and color tunable emissions. − The formation chemistry of these nanocrystals is also largely understood, and their facets, ligand interactions, and also shapes are successfully controlled. − Among these, the green emitting CsPbBr 3 nanocrystals are the most stable in ambient environment and remain an ideal material for further investigations. ,− These are established in orthorhombic phase, reported in different shapes, and also retained near unity photoluminescence quantum yields in different optimized reactions. ,,− Epitaxial heterostructures with various metals as well as semiconductor nanostructures with these CsPbBr 3 nanocrystals are also reported. ,− Beyond cube nanocrystals, truncated cube, rhombic dodecahedron, and rhombicuboctahedron nanocrystals with various facets are already designed and their important photophysical properties are also studied. ,,,− These nanocrystals mostly dominated with surface Cs + ions or positively charged ammonium ions even though existence of alkyl amines as well as carboxylic acids are reported. ,− Heteronucleations on the surface of these nanocrystals either with metals or a different semiconductor or even with the same material, are mostly controlled by the facets as well as the bonded ligands. ,− Moreover, heteronucleation is also facet selective because of the lattice matching at the junction and, hence, the number of particular facets and their surface areas are important to facilitate the desire heterostructure formation. ,,,,− …”