Lead Halide Perovskite Nanocrystals: A New Age of Semiconductive Nanocrystals

This thesis will mainly focus on the synthesis and characterization of colloidal lead halide perovskite (LHP) nanocrystals (NCs). It will also shed light on many synthetic aspects of these NCs, such as their size, shape and compositional control, as well as on how to increase their stability and processability, allowing the use of LHP NCs in devices. Furthermore, this thesis will present several nano-scaled reactions using lead halide NCs, which result in so-called “nanocrystal transformations”. To bridge the gap between the fundamental synthetic work and the application of these NCs, several proof-of-principle devices have been made with LHP NCs, including solar cells and LEDs and will all be demonstrated herein. Finally, several new halide based NCs have been synthesized and will be discusses, broadening the scope of this work not only to LHP NCs, but also to halide based NCs in general.