TeW2Se2S

metal
· JVASP-28890· TeW2Se2S

TeW2Se2S is a quaternary chalcogenide compound combining tellurium, tungsten, selenium, and sulfur—an experimental material class that blends properties of layered transition metal dichalcogenides (TMDs) with mixed-anion chemistry. This hybrid composition is primarily investigated in materials science research for optoelectronic and thermoelectric applications, where the combination of elements is designed to tune electronic bandgap, carrier mobility, and phonon scattering compared to binary or ternary TMD phases. The material remains largely in the research phase rather than established industrial production, with potential relevance for next-generation semiconductors, photovoltaics, or energy conversion devices where engineering customizable electronic structure is valued over conventional single-compound alternatives.

emerging optoelectronicsthermoelectric devicesphotovoltaic researchtransition metal dichalcogenide engineeringlaboratory-scale synthesisbandgap-tunable semiconductors

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Bulk Modulus(K)
2.880
GPa—
Poisson's Ratio(ν)
0.2300
-—
Shear Modulus(G)
1.890
GPa—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
6.165
kg/m³—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
0.2300
eV—
Dielectric Constant (Relative Permittivity)(εr)
23.55
-—
Magnetic Moment(μB)
0.00100
µB—
Piezoelectric Modulus(eij)
0.02605
C/m²—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Energy Above Hull(ΔEhull)
0.2084
eV/atom—
Formation Energy(ΔHf)
-0.4347
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.