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Epitaxy can involve single-crystal structures, although grain-to-grain epitaxy has been observed in granular films. [1] [2] For most technological applications, single-domain epitaxy, which is the growth of an overlayer crystal with one well-defined orientation with respect to the substrate crystal, is preferred. Epitaxy can also play an ...
Solar cells, or photovoltaic cells (PV) for producing electric power from sunlight can be grown as thick epi wafers on a monocrystalline silicon "seed" wafer by chemical vapor deposition (CVD), and then detached as self-supporting wafers of some standard thickness (e.g., 250 μm) that can be manipulated by hand, and directly substituted for wafer cells cut from monocrystalline silicon ingots.
Molecular-beam epitaxy (MBE) is an epitaxy method for thin-film deposition of single crystals. MBE is widely used in the manufacture of semiconductor devices , including transistors . [ 1 ] MBE is used to make diodes and MOSFETs (MOS field-effect transistors ) at microwave frequencies, and to manufacture the lasers used to read optical discs ...
Hydride vapour-phase epitaxy (HVPE) is an epitaxial growth technique often employed to produce semiconductors such as GaN, GaAs, InP and their related compounds, in which hydrogen chloride is reacted at elevated temperature with the group-III metals to produce gaseous metal chlorides, which then react with ammonia to produce the group-III nitrides.
A reactor is a chamber made of a material that does not react with the chemicals being used. It must also withstand high temperatures. This chamber is composed by reactor walls, liner, a susceptor, gas injection units, and temperature control units. Usually, the reactor walls are made from stainless steel or quartz.
PepsiCo has joined the growing list of major U.S. companies that are making changes to their diversity, equity and inclusion programs as President Donald Trump pushes to dismantle the practice ...
WASHINGTON (Reuters) -U.S. President-elect Donald Trump and Chinese President Xi Jinping discussed issues including TikTok, trade and Taiwan in a phone call on Friday, just days before Trump takes ...
An Arizona man’s long-lost companion has returned home after eight years apart. Paul Guilbeault, a local photographer, was reunited with his Miniature Doberman Pinscher, Damion, in a ...