Bi2TeSe2 — Properties & Data | MatWorld

Bi2TeSe2

ceramic

· JVASP-100850· Bi2TeSe2

Bi2TeSe2 is a layered bismuth chalcogenide ceramic compound belonging to the family of topological materials and narrow-bandgap semiconductors. This material is primarily investigated in research contexts for thermoelectric and optoelectronic applications, where its layered crystal structure and electronic properties make it relevant for solid-state energy conversion and advanced photonic devices. Its weak interlayer bonding distinguishes it from conventional ceramics and positions it as a candidate for exfoliated thin-film applications in next-generation electronics and quantum materials research.

thermoelectric devicestopological material researchtwo-dimensional semiconductorsinfrared detectorsenergy harvestingquantum electronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	34.99	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	71.99	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	22.09	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	7.424	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.2950	eV	DFT · OptB88vdW
↳	0.5860	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	109.4	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	26.09	-	DFT · OptB88vdW
↳	19.87	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	18.84	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.3656	eV/atom	DFT · OptB88vdW

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

Regulatory Screening

Environmental

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.

Bi2TeSe2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental