How Do Silicon Manufacturing Companies Create Thin Silicon Wafers? - PowerPoint PPT Presentation

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How Do Silicon Manufacturing Companies Create Thin Silicon Wafers?

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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. Only those Silicon Wafers Manufacturing CA are distributed which pass the testing phase. – PowerPoint PPT presentation

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Title: How Do Silicon Manufacturing Companies Create Thin Silicon Wafers?


1
How Do Silicon Manufacturing Companies Create
Thin Silicon Wafers?
  • Silicon Specialist LLC

2
  • 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.

3
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.

4
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.

5
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.

6
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.

7
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.

8
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.

9
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.

10
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