High purity metals and compounds are used as precursors in the Molecular Beam Epitaxy (MBE) process to produce thin films with precise control over the composition, crystal structure, and properties of the material. These precursors are typically delivered to the MBE chamber in the form of solid or liquid source materials, which are vaporized or sublimated to create a beam of atoms or molecules that is directed onto the substrate. The purity of the source materials is important because impurities can affect the quality and performance of the thin films produced by MBE. High purity metals and compounds are typically 99.999% pure or higher, and are carefully handled and stored to prevent contamination.
Yasin Özkan