Science Daily  October 26, 2023 2D multilayered halide perovskites have emerged as a platform for understanding organic–inorganic interactions, tuning quantum confinement effects and realizing efficient and durable optoelectronic devices. However, reproducibly synthesizing 2D perovskite crystals with a perovskite-layer thickness using existing crystal growth methods is challenging. An international team of researchers (Rice University, Houston, Northwestern University, University of Pennsylvania, France) demonstrated a kinetically controlled space confinement for the growth of phase-pure Ruddlesden–Popper and Dion–Jacobson 2D perovskites. Phase-pure growth was achieved by progressively increasing the temperature for a fixed time or the crystallization time at a fixed temperature, which allowed for […]