SiGe
semiconductor· SiGe
SiGe (silicon-germanium) is a compound semiconductor alloy that combines silicon and germanium in a crystalline lattice structure, offering tunable electronic properties by adjusting the Ge content. The material is widely used in high-frequency analog and mixed-signal integrated circuits, including RF amplifiers, power transistors, and heterojunction bipolar transistors (HBTs) where superior carrier mobility and operating speed are critical advantages over pure silicon. SiGe is also explored for infrared detectors, photovoltaic devices, and advanced optoelectronic applications where its direct bandgap characteristics at certain compositions enable efficient light emission and detection.
RF and microwave amplifiersHigh-frequency integrated circuitsHeterojunction bipolar transistors (HBTs)Infrared detectors and sensorsHigh-speed analog electronicsPhotovoltaic and optoelectronic devices
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | ksi | — | — | |
Poisson's Ratio(ν) | — | - | — | — | |
Shear Modulus(G) | — | ksi | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Thermal Conductivity(k) | — | BTU/(hr·ft·°F) | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | — | lb/in³ | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | — | eV | — | — | |
| ↳ | — | eV | — | — | |
Dielectric Constant (Relative Permittivity)(εr) | — | - | — | — | |
Magnetic Moment(μB) | — | µB | — | — | |
Piezoelectric Modulus(eij) | — | C/m² | — | — |
N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form / heat treatment / basis.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | — | eV/atom | — | — | |
Formation Energy(ΔHf) | — | eV/atom | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.