Silicon Carbide for Rapidly Growing Markets

Silicon carbide (SiC) is a high-demand crystal material that can efficiently handle voltages and temperatures far exceeding those of silicon. With decades of experience producing high-quality crystal materials, GT Advanced Technologies is meeting this demand with its ‘Prime Grade Plus’ 150mm SiC crystal for high-growth applications such as EV and Photovoltaics.

Key product attributes include a target usable height (UH) of 20 mm or greater and with fewer than 0.5 micropipes per square centimeter.

GT has two parallel focus points for silicon carbide: making the material affordable, and making it available in high volume. GT does this by ‘dialing in’ the process and then perfecting it. GT’s long-standing global experience in producing crystal-growth equipment represents a core competency that will allow it to meet cost and volume demands for silicon carbide across rapidly expanding markets.


Silicon Carbide for Electric Vehicles

The electric vehicle market is surging. You can see it everywhere you look. Car and truck makers have impressive models on the road now and many more soon to come. Silicon carbide will play a huge role in advancing the mass adoption of EVs because it enables circuits and modules to be extremely small and light, which in turn boosts battery efficiency and range.

Charging stations are also evolving. Widespread deployment of 350kW chargers is a reality now, and 475kW versions are close at hand.  This can provide a range boost of anywhere from 220 to 300 miles after only ten minutes of charging time!

Silicon carbide is the substrate material allowing this to happen, and GT Advanced Technologies is scaled to meet demand!

Key Advantages

Smaller: SiC enables thinner wires, smaller components and smaller electrical systems. This results in better space utilization.

Lighter: Every gram matters. SiC means fewer wires, lighter cooling systems, smaller housings and smaller batteries.

Faster: SiC has lightning-fast switching speeds and more efficient power transfer to the motor. That means 0-60 in the blink of an eye.

Farther: SiC helps to optimize battery performance for all EVs. That means you'll go farther per charge...perhaps the biggest advantage of all!

As with EV, the power electronics market is also booming. Most power electronics devices are either converting power or inverting it. Converters take DC voltage and step it up or down. Inverters can change from AC to DC or from DC to AC.

When it comes to small household devices like PC power supplies, the electronics inside can be fashioned from silicon-based circuits. But as power demands climb to hundreds of kilowatts, SiC becomes the sensible choice. Solar inverters, charging stations, data centers, and electro-motive applications are all transitioning to SiC.  And it’s not just the ability of SiC to handle higher temperatures and power; this amazing material can make things much smaller and lighter than they are now!

Product Specifications

  • Polytype: 4H
  • Type (Dopant): N (Nitrogen)
  • Orientation: 4.0º ±0.5 off axis towards <11-20> direction
  • Diameter (mm): 150 ±0.2
  • Resistivity, Ω-cm (bulk crystal surfaces): 0.012 – 0.022
  • Micropipes (/cm2): < 0.5
  • Primary flat length (mm): 47.5 ±2.5 or 57.5 ±2.5 parallel to <11-20> direction
    (per customer specification)
  • Target usable height @150 mm diameter: 20 mm or better

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