Bi2 Te4 Br8

semiconductor

· Bi2 Te4 Br8

Bi₂Te₄Br₈ is a bismuth telluride bromide compound belonging to the layered halide perovskite family of semiconductors, currently in the research and development phase rather than established commercial production. This material is of interest in the emerging field of halide perovskite semiconductors, where bismuth-based compounds are explored for their potential in optoelectronic and thermoelectric applications as alternatives to lead-based perovskites. The bromide substitution and mixed-halide composition typical of this class may offer tunable bandgap and thermal properties, though the specific performance profile and industrial viability of this particular composition remain subjects of active investigation.

halide perovskite researchthermoelectric device developmentoptoelectronic semiconductorslead-free perovskite alternativesexperimental photovoltaic materialsmaterials science prototyping

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	2,435	ksi	—
Shear Modulus(G)	814.1	ksi	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.8977	eV	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.4770	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.

Bi2 Te4 Br8

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control