Bi1.8Sb0.2Te3

semiconductor

· Bi1.8Sb0.2Te3

Bi₁.₈Sb₀.₂Te₃ is a bismuth-antimony telluride compound and a member of the bismuth telluride alloy family, widely recognized as a leading narrow-bandgap semiconductor for thermoelectric applications. This material is the industry standard for solid-state thermoelectric cooling and power generation devices operating near room temperature, valued for its superior figure of merit (ZT) compared to competing thermoelectric materials. Engineers select this composition over pure Bi₂Te₃ or other tellurides because the antimony doping tunes electrical and thermal transport properties to optimize performance in practical temperature ranges (250–500 K), making it essential for commercial thermoelectric modules used in precision temperature control and waste-heat recovery systems.

thermoelectric cooling moduleswaste heat recovery systemsprecision temperature controlsemiconductor thermoelectric devicesportable refrigerationthermal management in electronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.1500	eV	—

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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.

Bi1.8Sb0.2Te3

Electrical Properties

Regulatory Screening

Environmental

Export Control