Light-induced structural dynamics in 2D halide perovskites

Two-dimensional halide perovskites (2D-HaP) are a sub-class of 3D perovskites, which have emerged as a new class of solution-processed organic-inorganic (hybrid) low-dimensional semiconductors. They imbibe their properties from four exciting classes of novel materials - quantum wells, atomically thin 2D materials, organic semiconductors, and 3D halide perovskites. There is growing consensus that their physical properties are dictated by the interaction between the organic cation and the inorganic framework, which presents a unique opportunity to tailor their behaviors. In this talk I will describe our work over the year on 2D-HaPs on understanding and tailoring light-induced structural behaviors, novel photo-physical behaviors, and charge transport for high-efficiency optoelectronic device, with technologically relevant durability.