Publication date: 8th July 2026
Colloidal semiconductor nanocrystals that are active in the infrared spectral region are being intensively investigated as solution-processable inexpensive materials for future consumer market products. Together with lead sulfide, indium arsenide (InAs) nanocrystals are probably the most studied ones. This talk will discuss the advances of our group in the synthesis and characterization of InAs nanocrystals and their exploitation in lighting applications. The first part will focus on the use of green precursors and new reducing agents. I will also present our recent findings on the influence of ligands on the formation of organic/inorganic impurities that can compromise the cleaning of the nanocrystals and how this can be avoided. The role of metal halides as additives in reducing the density of defects/traps and in promoting a shell growth will be also presented. Finally, I will discuss the parameters that lead to strong light emission in core/shell nanocrystals, and their exploitation in light emitting devices.
