Compound semiconductor InGaAs technology uses indium gallium arsenide and related III-V materials when silicon cannot deliver the required electron transport or optical behavior.
The foundry problem is materials control. InGaAs can support high-speed transistors, infrared photodetectors, and RF devices, but it brings lattice matching, epitaxy, defect density, thermal, and integration challenges that are very different from mainstream CMOS.
| Application | Why InGaAs helps | Manufacturing challenge |
|---|---|---|
| High-speed electronics | High electron mobility | Uniform epitaxy and low contact resistance |
| Infrared sensing | Direct bandgap behavior | Detector dark current and material defects |
| RF and millimeter wave | Strong high-frequency device performance | Parasitics, matching, and thermal paths |
| Heterogeneous integration | Combines III-V performance with silicon systems | Bonding, alignment, and yield control |
This is a specialty-foundry discipline. The best process choice depends on whether the product needs III-V performance enough to justify more difficult substrates, tighter process windows, and more complex packaging.
Related Topics
Explore 500+ Semiconductor & AI Topics
From EUV lithography to CUDA optimization — search the full knowledge base or chat with our AI assistant.