Mo2 W1 Se2 S4

semiconductor

· Mo2 W1 Se2 S4

Mo2W1Se2S4 is a mixed-metal dichalcogenide semiconductor composed of molybdenum, tungsten, selenium, and sulfur atoms in a layered crystal structure. This material belongs to the family of transition metal dichalcogenides (TMDs), which are primarily of research interest for next-generation optoelectronic and electronic devices due to their direct bandgap properties and strong light-matter interactions in monolayer and few-layer forms. The alloying of molybdenum with tungsten and mixing of chalcogens (Se and S) allows tuning of electronic bandgap and optical properties beyond what single-element TMDs offer, making this composition relevant for exploratory work in flexible electronics, photovoltaics, and 2D materials engineering.

2D semiconductor researchFlexible electronicsThin-film photovoltaicsOptoelectronic devicesTransition metal dichalcogenide engineeringBandgap engineering applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	39.02	GPa	—
Shear Modulus(G)	26.27	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.8433	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.7850	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.

Mo2 W1 Se2 S4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control