Publication date: 15th December 2025
Halide perovskite nanocrystals have been extensively studied for their bright and color-tunable emission; however, only limited reports have been presented on their heterostructures with plasmonic metals or other semiconductor nanocrystals. The chemistry governing interface formation—through ionic–covalent or metallic bonding—is considered a key parameter in the design of such hybrid nanostructures. In this presentation, various epitaxial heterostructures of CsPbBr₃ with Pt, Au, Ag, and Bi metal particles, as well as with several chalcogenide and chalcohalide nanocrystals, will be discussed. Surface facets and epitaxial interface bonding will be shown through high-resolution electron microscopic imaging, and the underlying chemistry involved for the formation of these nanostructures will be described. Attention will be extended beyond isotropic nanocrystals to anisotropic morphologies such as rods and platelets. Along with their colloidal synthesis, changes in the optical properties of these heterostructures will also be presented. Overall, this presentation will reflect the synthesis, characterization, and modulation of material properties in the emerging heterostructures of lead halide perovskite nanocrystals.
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