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Crystal Clear
Published in Sharon Ann Holgate, Understanding Solid State Physics, 2021
It is clear from the diagram that each atom in the caesium chloride structure is surrounded by eight atoms of the opposite type, so the coordination number of the CsCl lattice is 8. (Although the unit cell shown in Figure 2.23 has the Cs+ ion in the middle and Cl− ions at the corners, the CsCl crystal structure would still be produced if it had a Cl− ion in the centre and Cs+ ions at the corners instead.) While most of the alkali halides (ionically bonded compounds composed of a Group I metal and a Group Vllb halogen) have the sodium chloride structure that we will look at next, caesium chloride (CsCl), caesium bromide (CsBr), and caesium iodide (CsI) crystallise in the caesium chloride structure. Ammonium chloride (NH4Cl) and some types of brass (CuZn) are among the other substances that have the caesium chloride structure.
Digital Receptors
Published in Christopher M. Hayre, William A. S. Cox, General Radiography, 2020
The plate itself has a phosphor layer that is crystalline in structure and contains either barium fluorohalide (BaFl) or caesium bromide (CsBr), both of which are doped with europium (Eu2+). The phosphor layer is coated onto a base using polymers that act as glue to hold it in place. A clear solvent is then coated over the phosphor to seal it to protect the phosphor from physical damage. A black reflective base under the phosphor helps improve image resolution by reducing dispersion of light as the CR reader processes the plate. The black base also allows for a thicker phosphor layer providing better absorption efficiency. These are all mounted onto a lead sheet that absorbs excess photons and reduces backscatter whilst an aluminum panel is used as a backing layer (Figure 2.2).
Iodine doping of CsPbBr3: toward highly stable and clean perovskite single crystals for optoelectronic applications
Published in Philosophical Magazine, 2023
P. Sujith, Saidi Reddy Parne, Padmanabhan Predeep
Chemicals: Lead bromide (PbBr2, ≥98%), Caesium bromide (CsBr, ≥99.9%), Dimethyl sulfoxide (DMSO, ≥99.9%, anhydrous), and Lead iodide (PbI2, ≥99.99%) are collected from Sigma-Aldrich company and utilised them exactly as directed.