W2 Se2 S2
semiconductor· W2 Se2 S2
W2Se2S2 is a mixed-chalcogenide layered semiconductor compound combining tungsten with selenium and sulfur constituents, belonging to the family of transition metal dichalcogenides (TMDCs) and their mixed-anion variants. This material is primarily investigated in research contexts for its potential in optoelectronic and excitonic applications, where the intentional mixing of chalcogens (Se and S) enables bandgap tuning and modified electronic properties compared to single-chalcogenide analogues like WSe2 or WS2. The alloyed composition offers advantages for photovoltaic devices, light-emitting applications, and heterostructure engineering where precise control of electronic bandgap and carrier dynamics is required.
2D semiconductor heterostructuresthin-film photovoltaics (research)optoelectronic devicesexcitonic engineeringlayered device integrationbandgap-tunable semiconductors
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | Pa | — | — | |
Shear Modulus(G) | — | Pa | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | — | eV | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Formation Energy(ΔHf) | — | 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.