The article "Highly Luminescent Colloidal Nanoplates of Perovskite Cesium Lead Halide and Their Oriented Assemblies" by Yehonadav Bekenstein, Brent A. Koscher, Samuel W. Eaton, Peidong Yang, and A. Paul Alivisatos, published in the Journal of the American Chemical Society, reports the synthesis and properties of highly luminescent colloidal nanoplates (NPLs) of cesium lead halide perovskites. These NPLs exhibit quantum confinement effects, with a photoluminescence quantum yield (PLQY) of 84%. The authors demonstrate the controllable self-assembly of these NPLs into stacked columnar phases or thin-oriented sheet structures. The NPLs show a broad emission range, covering the entire visible spectrum, and their high PLQYs make them suitable for optoelectronic studies and future device applications. The synthesis method involves modifying the nanocrystal synthesis reported by Protesescu et al., with reactions at lower temperatures producing asymmetric growth and quasi-2D geometries. The NPLs are characterized using techniques such as HR-TEM, XRD, and SAXS, and their self-assembly into hierarchical structures is observed. The study highlights the potential of perovskite NPLs for advanced optoelectronic applications.The article "Highly Luminescent Colloidal Nanoplates of Perovskite Cesium Lead Halide and Their Oriented Assemblies" by Yehonadav Bekenstein, Brent A. Koscher, Samuel W. Eaton, Peidong Yang, and A. Paul Alivisatos, published in the Journal of the American Chemical Society, reports the synthesis and properties of highly luminescent colloidal nanoplates (NPLs) of cesium lead halide perovskites. These NPLs exhibit quantum confinement effects, with a photoluminescence quantum yield (PLQY) of 84%. The authors demonstrate the controllable self-assembly of these NPLs into stacked columnar phases or thin-oriented sheet structures. The NPLs show a broad emission range, covering the entire visible spectrum, and their high PLQYs make them suitable for optoelectronic studies and future device applications. The synthesis method involves modifying the nanocrystal synthesis reported by Protesescu et al., with reactions at lower temperatures producing asymmetric growth and quasi-2D geometries. The NPLs are characterized using techniques such as HR-TEM, XRD, and SAXS, and their self-assembly into hierarchical structures is observed. The study highlights the potential of perovskite NPLs for advanced optoelectronic applications.