Bi2Te0.9Se2.1

semiconductor

· Bi2Te0.9Se2.1

Bi2Te0.9Se2.1 is a bismuth telluride–selenide solid solution, a p-type thermoelectric semiconductor engineered by partial substitution of tellurium with selenium in the classic Bi2Te3 lattice. This material is explored primarily in research and advanced thermoelectric applications where optimizing the Seebeck coefficient and thermal conductivity trade-off is critical; it bridges the bandgap and phonon scattering characteristics between end-member compositions to improve figure-of-merit (ZT) for heat-to-electricity conversion or active cooling over a specific temperature range.

thermoelectric power generationwaste heat recoverysolid-state cooling and refrigerationtemperature-dependent device tuningresearch thermoelectric materialsmid-range thermal management systems

Compliance & Regulations

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

Units:

si imperial

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

Bi2Te0.9Se2.1

Electrical Properties

Regulatory Screening

Environmental

Export Control