We’ve been working with GaAs for a long time. You likely have a fair bit of it in your phone. A few things prevent its use for advanced CMOS - base material qua

We’ve been working with GaAs for a long time. You likely have a fair bit of it in your phone. A few things prevent its use for advanced CMOS - base material quality is inferior to Si, it’s not available in 12” substrates, and the cost is high. You will likely see material integration of III-V material systems into Si, rather than using standalone GaAs for logic.