W2 Se2 S2 — Properties & Data | MatWorld

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	33.70	GPa	DFT · OptB88vdW
Shear Modulus(G)	24.70	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.7035	eV	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.6670	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 Se2 S2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control