W2 S4
semiconductor· W2 S4
W2S4 is a layered transition metal dichalcogenide semiconductor compound combining tungsten and sulfur in a 1:2 stoichiometric ratio. This material belongs to the family of two-dimensional semiconductors and is primarily of research and development interest for next-generation electronic and photonic applications. W2S4 and related tungsten sulfides are explored for their tunable band gaps, strong light-matter interactions, and potential to enable flexible electronics, optoelectronic devices, and energy storage systems where conventional silicon may be limited by size, efficiency, or mechanical constraints.
thin-film transistorsphotodetectors and photonicsenergy storage (batteries/supercapacitors)flexible and wearable electronicsquantum materials researchcatalysis and sensing applications
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | — | ksi | — | — | |
Shear Modulus(G) | — | ksi | — | — |
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.