W2 S4 — Properties & Data | MatWorld

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	10,777.9	ksi	DFT · OptB88vdW
Shear Modulus(G)	7,618.4	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.7182	eV	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.8950	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

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.

W2 S4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control