Includes Symposium S.CT02—Halide Perovskites—From Lead-Free Materials to Advanced Characterization and Deposition Approaches
Halide perovskites (HPs) have catalyzed a revolution in (opto)electronic devices including solar cells, light-emitting devices, lasers, optical amplifiers, photo-/X-ray/radiation detectors, memristors, and transistors. HPs are a broad family of materials that exhibit wide tunability in their chemical composition from organic to inorganic as well as the crystal-structure dimensionality from 3D to 0D, endowing these materials with a variety of properties. In particular, perovskite-based solar cells have reached certified power conversion efficiencies beyond 25 % and emerged as a game-changing photovoltaic technology. Furthermore, HPs exhibit unusual physical/chemical behaviors that are rarely seen in other materials systems. While much of the early research focused on improving device performance, there is an ever-increasing fraction of the field focusing on enhancing the fundamental understanding of the physics, chemistry and materials science underpinning these HP materials, devices and further critical technological developments. This symposium will cover topics at the forefront of fundamental and applied understanding driving the development of devices and new applications (see list below). Critically, we will seek to enable new links between fields: theory driving experiment and vice versa, fundamental links between properties through multimodal investigations, and connecting fundamental properties to operating devices through in-operando and in-situ characterization. This symposium will therefore stimulate efforts to advance the state-of-knowledge of perovskites and the development of high-performance devices.