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What is Float Zone Silicon?

Discrete Power Device Float Zone
RF Microchip Float Zone
MOS Power Float Zone
High Efficiency Solar Cell Float Zone Silicon

Float-zone silicon is the purest form of silicon.    The ingot is made by vertical zone melting.


Float Zone (FZ) Silicon Wafers are used primarily for


  • discrete power
  • MOS Power
  • high efficiency solar cells
  • RF/Wireless chips
  • or when very high resistivity  is need increased performance.


Float Zone ingots are undoped, but can be intentionally doped by injecting gas dopants or using the Neutron Transmutation Doping (NTD) process.

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Float Zone (FZ) Silicon Ingot

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Solar Silicon Wafers

Solar Wafers

Some of the Float Zone Silicon Wafers that we sell!



FZ Si Item #2313 - 25.4mm Undoped <111> >2000 ohm-cm 280um SSP Test



FZ Si Item #2260 - 50.8mm Intrinsic <100> >8500 ohm-cm 280um SSP Prime




FZ Si Item #1706 - 76.2mm Undoped <100> 3000 ohm-cm 380um DSP Test


FZ Si Item #1994 - 76.2mm N/P <111> 5000 ohm-cm 380um DSP Prime




FZ Si Item #2272 - 100mm  Undoped <100> >20,000 ohm-cm 500um DSP Prime


FZ Si Item #982 - 100mm P/B <111> FZ 40-60 ohm-cm 255um SSP Prime


FZ Si Item #1474 - 100mm N/P <100> 320-480 ohm-cm 500um SSP  Prime



FZ Si Item #1383 - 150mm  Undoped <100> >10,000 ohm-cm 650um DSP Prime


FZ Si Item #2229 - 150mm  P/B  <100>  110-147 ohm-cm 675um SSP Prime


FZ Si Item #1972 - 150mm N/ P <100> 2000-8000 ohm-cm 320um SSP Prime




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