Extraordinary Exciton Transport Phenomena in CsPbBr₃ Nanocrystal Solids

In some ways, the properties of colloidal CsPbBr₃ nanocrystals resemble those of conventional semiconductor nanocrystals. In other ways, CsPbBr₃ is wholly unique. In this talk, I will present experimental results from lab using time-resolved emission microscopy to probe the spatiotemporal dynamics of exciton transport in disordered CsPbBr₃ nanocrystal films and nanocrystal superlattices. CsPbBr₃ nanocrystals exhibit a range of novel and unconventional transport behavior, including excitation memory effects, collective phenomena, and record-high values of exciton diffusivity.