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IIUC Silicon Carbide (SiC) wafers are an alternative to doped Silicon Dioxide (SiO_2) wafers, but EV chargers are built out of 6x6 SiC wafers and they're very expensive.
To move semiconductor fabrication off of scarce highly-processed commodity inputs would help to eliminate current production bottlenecks.
This was above the article text: "High-Bandwidth Memory (HBM) Roadmap" under the heading Toms Hardware Premium Roadmaps. It's also spelled out in the 2nd paragraph of the article.
After you have spelled it out, feel free to use the initialism as much as you like for brevity.