Supramolecular Assembly and Light-Emission in Organic Semiconductor-incorporated Perovskite (OSiP)

In this talk, I will present our recent efforts in the synthesis and characterization of a new family of hybrid semiconductor material – Organic Semiconductor-incorporated Perovskite (OSiP). Three topics related to the interplay between the organic and the inorganic building blocks will be covered. First, we demonstrate extremely fast and efficient energy transfer and charge transfer between the organic and inorganic components, making the OSiP materials useful in solar cells and light-emitting diodes. Second, via judicious molecular design and introduction of secondary bonding interactions, we show that the organic building blocks can facilitate supramolecular assemble of the metal halide octahedra, allowing us to realize unprecedented control over structure, morphology, and epitaxial growth. Finally, we reverse the thinking and use the inorganic lattice as a template to align (and improve) the organic building blocks. This approach leads to the observation of a single-molecule-like aggregate state that exhibit unusual light emission and collective behaviors from the organics.