cicCartuja Centro de Investigaciones Científicas de la cartuja
Título: ABX3 perovskite nanocrystals templated in porous matrices
Doctorando: Andrea Rubino (ICMS)
Fecha: Jueves, 17 de diciembre de 2020. 10:30h
Lugar: Salón de Grados del cicCartuja2, por medio de la plataforma de enseñanza virtual de la Universidad de Sevilla (aplicación Collaborate Ultra)
Directores de tesis: Prof. Dr. Hernán Ruy Míguez García y Dr. Mauricio Ernesto Calvo Roggiani
Resumen
This thesis work focuses on the study of a class of semiconductors, the lead halide ABX3 perovskites, in the form of nanocrystals. In particular, a new synthesis approach is presented based on the use of porous matrices, in the form of thin films, composed of metal oxide nanoparticles. This templated method allows for control of the size of perovskite nanocrystals in the quantum confinement regime. The uniqueness of this type of composite materials, so prepared, has allowed an advanced fundamental study of the optoelectronic properties of perovskite nanocrystals. More precisely, the work of this thesis has been focused on the linear optical response (e.g. emission, absorption), non-linear properties (third harmonic generation), but also the influence of lattice dynamics and the analysis of nanocrystal growth. This investigation brings relevant information for the optimization of perovskite nanocrystal based technology. Finally, this work also demonstrates and effective integration of the templated synthesis, in the fabrication of optoelectronic devices for photovoltaic and lighting applications.
