Si0.2Ge0.8

semiconductor

· Si0.2Ge0.8

Si₀.₂Ge₀.₈ is a silicon-germanium alloy semiconductor with 80% germanium content, belonging to the group IV semiconductor family used in high-speed optoelectronic and thermoelectric applications. This composition is engineered to achieve a narrower bandgap than pure silicon while maintaining lattice compatibility with germanium substrates, making it valuable for infrared detectors, heterojunction bipolar transistors, and thermoelectric energy conversion systems. The high germanium fraction positions this alloy for applications demanding improved carrier mobility and thermal properties compared to Si-rich SiGe variants.

infrared photodetectorsheterojunction bipolar transistors (HBTs)thermoelectric generatorsfiber-optic receivershigh-frequency integrated circuitsspace and defense electronics

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.8600	eV	—

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.

Si0.2Ge0.8

Electrical Properties

Regulatory Screening

Environmental

Export Control