Lowest Price for China High Quality Customized Graphite Heater for Polycrystalline Silicon Ingot Furnace

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 2022 high quality MOCVD Susceptor Buy online in China

 A wafer is a slice of silicon roughly 1 millimeter thick that has an extremely flat surface thanks to procedures that are technically very demanding. The subsequent use determines which crystal growing procedure should be employed. In the Czochralski process, for example, the polycrystalline silicon is melted and a pencil-thin seed crystal is dipped into the molten silicon. The seed crystal is then rotated and slowly pulled upwards. A very heavy colossus, a monocrystal, results. It is possible to select the monocrystal’s electrical characteristics by adding small units of high-purity dopants. The crystals are doped in accordance with the customer specifications and then polished and cut into slices. After various additional production steps, the customer receives its specified wafers in special packaging, which allows the customer to use the wafer immediately in its production line.

A wafer needs to pass through several steps before it is ready for use in electronic devices. One important process is silicon epitaxy, in which the wafers are carried on graphite susceptors. The properties and quality of the susceptors have a crucial effect on the quality of the wafer’s epitaxial layer.

For thin film deposition phases such as epitaxy or MOCVD, VET supplies ultra-pure graphiteequipment used to support substrates or “wafers”. At the core of the process, this equipment, epitaxy susceptors or satellite platforms for the MOCVD, are first subjected to the deposition environment:

High temperature.
High vacuum.
Use of aggressive gaseous precursors.
Zero contamination, absence of peeling.
Resistance to strong acids during cleaning operations