Study on the organic components in the Hot-injection method: a useful approach for (nano)crystal synthesis

This thesis explores the synthesis and advanced properties of semiconductor nanocrystals, focusing on lead halide perovskites and emerging chalcohalide materials. It highlights the importance of monodisperse nanocrystals and the versatility of colloidal synthesis, particularly the hot-injection method. Sustainable synthetic strategies were investigated using green solvents such as limonene and pinene to produce CsPbX₃ (X = Cl, Br, I) nanocrystals with controlled morphology. The work also addresses the development of chiroptical properties in luminescent nanomaterials through the design and synthesis of a novel chiral ligand, (S,Z)-nonadec-10-en-2-amine, which was employed in the preparation of CsPbBr₃ nanocrystals of various morphologies and their subsequent optical characterization. Finally, the study extends to the colloidal synthesis of the mixed-metal chalcohalide Sn₂SbS₂I₃ via a dual hot-injection approach, yielding pure and crystalline microcrystals with an optical bandgap suitable for photovoltaic applications. Overall, this thesis advances sustainable synthesis methodologies and the exploration of novel functional properties in semiconductor nanomaterials.