Energy Transfer in Quantum Dot Solids

Understanding the energy flow in quantum dot solids represents an important step toward designing artificial systems with configurable optoelectronic properties. The growing complexity of nanoparticle assemblies and deposition techniques calls for advanced methods of characterization and control of the underlying exciton diffusion, which is pervasive in these materials. Along these lines, the Perspective will review recent strategies for measuring the energy transfer processes in assemblies of semiconductor nanocrystals with particular emphasis on emerging avant-garde characterization techniques. We will also shed light on novel experimental methods for controlling the energy diffusion in quantum dots solids, highlighting the role of assembly architecture in ensuing processes of exciton diffusion and dissociation. Novel energy transfer mechanisms recently observed in perovskite quantum dots and triplet-sensitizer nanocrystals will also be discussed.