How Do Silicon Manufacturing Companies Create Thin Silicon Wafers?

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How Do Silicon Manufacturing Companies Create
Thin Silicon Wafers?

• Silicon Specialist LLC

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• The process of silicon manufacturing begins with
  the extraction of silicon. Silicon is the third
  most abundant element in earth. However, it is
  not simple to obtain as it does not exist in
  ready-made form. Silicon is extracted using an
  elaborate process. The impure silicon contains
  calcium and aluminum, which need to be separated
  using purification method to obtain pure silicon.
  This article discusses various stages of silicon
  manufacturing.

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Purification

• Extending over two stages, the first stage of
  purification process uses high temperature,
  exceeding 2000 degrees Celsius, for burning off
  the impurities from silica sand after its
  extraction. This is done in large electric
  furnaces. Once the impurities are treated with
  heat, the remaining material is 99 pure silicon.
  In order to make fine thin silicon wafer CA which
  are capable of transmitting weak electric
  signals, the remaining 1 impurities also have to
  be removed. For maximum effectiveness, the
  purified silicon is turned into powder after
  grinding and mixed with hydrogen chloride. To
  further eradicate the remaining impurities, this
  mixture is heated which results in 99.99 purity
  percentage. After this process, the crystals are
  obtained which are then further processed.

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Silicon Ingots

• After the purification of silicon, the next step
  is to achieve consistent silicon ingots which do
  not have any crystallized structures. Achieving
  consistency helps improve conductivity of the
  material. Therefore, before slicing silicon into
  thin wafers, ingots have to be obtained through
  melting purified silicon and then adding a seed
  crystal. The seed crystal is nothing but small
  piece of silicon, which accumulates and hardens
  during the time it is rotated in the mixture. The
  resulting product is an ingot having a consistent
  structure with ideal qualities of a
  semiconductor.

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Slicing

• The consistent silicon ingot is then diced into
  thin wafers. The usage or application of silicon
  in an industry determines the size of each slice
  or silicon wafer. The solar cells require larger
  slices whereas small wafers are sufficient for
  small electronics such as cell phones.
• For precise and fine cutting of silicon ingots, a
  diamond blade is used which can dice even
  razor-thin wafers. The silicon slices are tweaked
  for a variety of use because no slice is cut
  under hard specification. Instead, various
  applications tailor these slices as per their
  use. They can customize it during polishing and
  cleaning process.

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Smoothing and Cleaning

• To offer high effectiveness, the silicon
  manufacturing companies make sure that silicon
  wafers are smoothened and cleaned because a small
  spot on a semiconductor can prevent your
  electronics from functioning as per their
  requirements. For flawless semiconductors, thin
  silicon wafers are polished and cleaned.

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Polishing

• The polishing process aims at smoothing out the
  surface of thin silicon wafer. This is done using
  both chemicals and mechanical equipment to create
  a mirror-like surface, which then conducts
  electric current perfectly. With the help of
  polishing pads, finishing of sliced wafers is
  carried out. A vacuum carrier holds the slices in
  place and treats them with polishing pads, which
  further refine the thin layer of wafer, leaving
  behind a smooth surface.

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Cleaning

• The finished product is then cleaned to get rid
  of any residue material which can affect the
  conductivity. It is carried out by professionals
  in a clean-room. To protect the thin silicon
  wafers from any contaminants, professional
  cleaning staff wears protective equipment.

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Silicon Specialist LLC

• Best silicon manufacturing companies make sure to
  follow the whole process, and carry out all
  stages to provide high quality semiconductors.
  Silicon Specialist makes sure to test the silicon
  wafers after manufacturing process is completed.
  This is to ensure the quality and efficiency of
  the product. In the testing phase, the wafers are
  put through the same conditions in which they are
  expected to function in real-time. Only those
  Silicon Wafers Manufacturing CA are distributed
  which pass the testing phase.

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