High Quality Materials for Durable Products 

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CZ Silicon

Silicon wafers form the foundation of modern electronic devices. The Czochralski (CZ) Method is the most common way to grow silicon ingots. SQI offers prime- and test grade CZ Silicon in a wide range of standard and custom parameters.


Float Zone Silicon

The Float Zone (FZ) Method produces a highly pure form of silicon. The purity of the material allows for lower defect concentrations and higher resistivity levels and it is useful in high-power devices, detectors and solar applications. SQI offers the very best Float Zone material commercially available, not made from CZ re-melts but from high-quality polysilicon, thus allowing for resistivity’s in excess of 10k ohm –cm. Silicon Quest is the exclusive representative for Topsil Float Zone Products in the USA.



Sapphire (A12O3) is a semi –conductor material that is widely used in the fabrication of light-emitting diodes (LEDs). SQI’s proprietary sapphire supply provides optical and mechanical grade substrates as well as ingots in all orientations and all sizes from 2” to 6” diameter.



SOI is a technology that bonds an active wafers to a handle wafer with an oxide layer in between. SQI offers a wide range of SOI products, suitable for a variety of applications.


Silicon Carbide

Silicon carbide (SiC) is a material used in diodes, transistors and some LED applications. SQI’s exclusive supplier of silicon carbide wafers and ingots provides top-quality material.


Other Materials

SQI offers a wide range of other semiconductor substrates and wafers.
A few examples include:

  • Glass Wafer
  • Pyrex and Borofloat Wafers
  • Quartz Wafers
  • Soda Lime Wafers
  • Germanium Wafers
  • Fused Silica
  • Gallium Arsenide
  • Gallium Phosphide
  • Gallium Antimonide
  • Indium Arsenide
  • Indium Phosphide
  • Indium Antimonide