Events
O luns 24 de novembro a las 11:00 horas, Nadesh Fiuza Maneiro, do grupo de Física e Química de Materiais (MCPG) do CINBIO, defenderá a súa tese de doutoramento baixo o título “Surface Passivation Strategies and Chiral Emission Engineering in Halide Perovskite Nanocrystals".
Será no Salón de grados nuevo de Ciencias del Mar, no campus de Vigo.
ABSTRACT:
Nanotechnology has enabled precise control of materials at the nanometer scale, leading to novel optical and electronic properties beyond those of bulk materials. Semiconductor nanocrystals, governed by quantum confinement and surface effects, offer tunable emission and high photoluminescence efficiency, making them promising for photonic and optoelectronic applications. Among these, lead halide perovskite nanocrystals stand out for their sharp emission, efficient charge transport, and solution-processable synthesis. However, their performance is limited by instability, surface defects, and incomplete understanding of energy transfer and advanced optical behaviors. This research establishes a framework for the rational design and functionalization of halide perovskite nanocrystals, focusing on CsPbCl₃ systems for blue and violet emission. Optimized synthesis and surface passivation strategies improve crystallinity, stability, and optical quality, while dopant engineering with Mn²⁺ enables tunable dual emission through controlled host–dopant interactions. Comprehensive spectroscopic studies correlate structural and photophysical properties. Integration with dielectric and metallic metasurfaces further enhances emission characteristics and polarization control. The outcomes provide design principles for stable, highly emissive, and multifunctional perovskite nanocrystals, offering pathways toward next-generation light-emitting and photonic devices.
