chemical beam epitaxy

Chemical beam epitaxy (CBE) is a method for growing thin crystalline films, often used in the creation of microelectronic and optoelectronic devices. It is a form of vapor growth where atoms are delivered in a controlled manner to the surface of a substrate crystal, layer by layer.123

Crystallography is the science that studies the arrangement and bonding of atoms within crystalline solids and the geometric structure of crystal lattices. Modern crystallography often utilizes X-ray diffraction to determine these internal structures.4

Epitaxy, from which CBE derives its name, means "upon arrangement" and refers to the process of growing a crystal on another crystal, with the orientation dictated by the substrate. This can involve growing layers of the same material (homoepitaxy) or different materials (heteroepitaxy). CBE is a precise technique that allows for the controlled deposition of single atomic layers, contributing to the fabrication of complex semiconductor devices.132