Si0.6Ge0.4

Si₀.₆Ge₀.₄ is a silicon-germanium alloy semiconductor with 60% silicon and 40% germanium by composition, engineered to modify bandgap and lattice properties relative to pure silicon. This material is primarily used in high-speed integrated circuits, heterojunction bipolar transistors (HBTs), and advanced optoelectronic devices where the tuned bandgap enables faster carrier transport and improved performance over conventional Si. The Ge-enriched composition makes it particularly valuable for RF/microwave applications, analog integrated circuits, and emerging infrared detector applications where bandgap engineering and enhanced carrier mobility are critical.