W2 S2 — Properties & Data | MatWorld

W2 S2

semiconductor

· W2 S2

W2S2 is a two-dimensional layered semiconductor compound composed of tungsten and sulfur in a 1:2 stoichiometric ratio, belonging to the transition metal dichalcogenide (TMD) family. This material is primarily of research and emerging technology interest rather than mature industrial production, with potential applications in next-generation electronics, optoelectronics, and energy storage where its direct bandgap and strong light-matter interactions could enable high-performance devices at reduced thicknesses compared to conventional semiconductors. Engineers considering W2S2 should recognize it as a laboratory-scale compound currently being explored for advanced applications rather than an established commercial material, with value proposition centered on novel quantum properties and integration into flexible or ultrathin device architectures.

2D semiconductor researchOptoelectronic devicesFlexible electronicsEnergy storage (batteries/supercapacitors)Photovoltaic/solar cellsTransistor channels

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.07210	eV	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.5200	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 S2

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control