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  • Silicon (Si) Crystals and Wafers
  • Silicon (Si) Crystals and Wafers

Silicon (Si) Crystals and Wafers

  • High purity silicon crystals and wafers for semiconductor
  • Diameter of 2”, 3”, 4”, 6” and 8” or customized size
  • Stocked and custom Si wafers availalbe
  • Applications: substrates for expitaxial film growth of GaN, semiconductors, electronics, lasers and solar energy ect.. 
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Orientation <100>, <110>, <111> Size(mm) 10×3, 10×5, 10×10, 15×15, 20×15
Thickness 0.5mm, 1.0mm Size Tolerance <±0.1mm
Thickness Tolerance <±0.015mm(special in<±0.005mm) Polishing SSP (single surface polished) or
DSP (double surface polished)
Redirection Precision ±0.5° Redirection the Edge 2°(special in 1°)


Basic Properties:

Crystal Structure M3 Melt Point(℃) 1420
Density(g/cm3) 2.4    
Doped Material No b-doped p-doped
Type P N
Resistivity >1000Ωcm 10-3~104Ωcm 10-3~104Ωcm
EPD ≤100∕cm2 ≤100∕cm2 ≤100∕cm2
O Content (/cm3) ≤1~1.8×1018 ≤1~1.8×1018 ≤1~1.8×1018
C Content (/cm3) ≤5×1016 ≤5×1016 ≤5×1016

Semiconductor silicon wafers are usually made of high-purity polycrystalline silicon ingots using the CZ Method to grow silicon single crystal ingots with different resistivities, the Si wafers are made in a strictly controlled and orderly manufacturing process that goes : crystal orientation→outer-round barrel grinding→processing the primary and secondary reference planes→ Slicing → chamfering → heat treatment → grinding → chemical corrosion → polishing → cleaning → inspection → packaging and other processes.

Single Crystal Silicon for solar energy applications includes p-type and n-type silicon. Ultra high purity silicon is used in the semiconductor industry as a result of its semiconducting properties. Silicon is also used as an alloying element in the manufacture of certain alloys (e.g. ferrosilicon, an alloy of iron and silicon which is used to introduce silicon into steel and cast iron). 

Hangzhou Shalom EO offers the various grade of Silicon (Si) wafers and substrates, they are used as substrates for GaN (Gallium Nitride) epitaxial film growth, semiconductor research and industries.