Publication date: 15th December 2025
Halide perovskites have become in the last years enormously appealing optoelectronic materials because of their high sunlight-harvesting efficiency and notable charge carrier generation/transfer capabilities. These features have been recognized as the key factors for enhancing photoconversion efficiencies in solar photovoltaic devices. Furthermore, their fascinating photoluminescence quantum yield (PLQY) especially in the case of colloidal nanocrystals and can explain the expansion of their applicability in the wide optoelectronic field. The outstanding PLQY of perovskite nanocrystals is the clear evidence of the significant reduction of non-radiative recombination pathways. Consequently, after photoexcitation, these systems present a pool of photoexcited carriers whose extra energy can be used in an efficient radiative emission in LEDs or taken advantage of in different ways, such as providing work in solar cells or driving diverse chemical reactions. In this talk, our interest will focus on this last application. Here, we shown the application of halide perovskite nanocrystals in the photocatalytical and photoelectrochemical degradation of Organic compounds, highlighting the potentiality to drive both oxidation and reduction reactions. However, their use in most of the practical applications is limited due to the instability of the perovskite nanocrystals in polar environments. We will also discuss about the preparation of non-encapsulated CsPbX3 nanocrystals dispersed in fully alcohol environments, with outstanding stability through surface defect passivation strategy. Eventually, the use of Pb-free Sn-based halide perovskites will be discussed for application in HI splitting and beyond.
The work presented in this talk has been partially funded by Project Prometeo Q-solutions (CIPROM/2021/078) and Project OHPERA (HORIZON EIC PATHFINDERS
Project 101071010)
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