Bi2Te1.2Se1.8

semiconductor

· Bi2Te1.2Se1.8

Bi₂Te₁.₂Se₁.₈ is a bismuth telluride-selenide solid solution, a narrow-bandgap semiconductor belonging to the V-VI compound family commonly used in thermoelectric applications. This alloy composition represents an optimization of the classic Bi₂Te₃ thermoelectric material through partial substitution of tellurium with selenium, tuning the electronic and thermal properties for enhanced performance in specific temperature ranges. The material is primarily used in commercial and research thermoelectric devices where conversion between thermal and electrical energy is required, offering advantages over pure Bi₂Te₃ in certain cooling or power generation scenarios.

thermoelectric cooling moduleswaste heat recoverytemperature sensing devicescryogenic refrigerationpower generation from heatthermal management in optoelectronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.2800	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.

Bi2Te1.2Se1.8

Electrical Properties

Regulatory Screening

Environmental

Export Control