Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals

Lead halide perovskite (LHP) nanocrystals (NCs) have recently garnered enhanced development efforts from research disciplines owing to their superior optical and optoelectronic properties. These materials, however, are unlike conventional quantum dots, because they possess strong ionic character, labile ligand coverage, and overall stability issues. As a result, the system as a whole is highly dynamic and can be affected by slight changes of particle surface environment. Specifically, the surface ligand shell of LHP NCs has proven to play imperative roles throughout the lifetime of a LHP NC. Recent advances in engineering and understanding the roles of surface ligand shells from initial synthesis, through postsynthetic processing and device integration, finally to application performances of colloidal LHP NCs are covered here.

Automated summary

Lead halide perovskite nanocrystals have superior optical and optoelectronic properties, but their strong ionic character and unstable ligand coverage make the system highly dynamic and susceptible to slight changes. The surface ligand shell is crucial throughout the lifetime of the nanocrystals. Recent advances have been made in engineering and understanding the roles of surface ligand shells in various stages of synthesis, processing, integration, and application of colloidal LHP nanocrystals.