Publication date: 3rd July 2020
Halide perovskites have experienced a tremendous amount of rapid development now as one of the most unique semiconductor systems because of incredible tolerance to structural and atomic defects. Most notably, perovskites have been slated to revolutionize the photovoltaics industry, and many signs now point to the fact that this may indeed happen.
Halide perovskites can also be synthesized in solution into colloidal nanocrystals again with exceptional qualities which could apply to PV, but also to other novel technologies. Using perovskite nanocrystals, NREL has pioneered new types of devices in photovoltaic, sensing, and light emitting systems. This talk will show what makes colloidal perovskites distinct from thin films, how surface effects can be leveraged, and open opportunities at the forefront of development. Perovskite nanocrystals can alleviate some stability issues that thin film materials exhibit, most notably, they show stable phase characteristics with fully inorganic compositions. However, they also provide a fantastic platform to discover what fundamental properties hybrid semiconductors possess and how to engineer desired characteristics. I will discuss surface and structural properties, quantum confinement characteristics, film formation, device fabrication and performance.