Hf4 S2

semiconductor

· Hf4 S2

Hf4S2 is a layered hafnium sulfide compound belonging to the transition metal dichalcogenide (TMD) family, a class of semiconductors with two-dimensional crystal structures. This material is primarily of research and developmental interest rather than established industrial production, with potential applications leveraging its semiconducting properties, mechanical stiffness, and unique layered geometry for next-generation electronic and optoelectronic devices.

2D semiconductor researchthin-film electronicsoptoelectronic devicesnanoelectronicsemerging materials development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	136.6	GPa	—
Shear Modulus(G)	77.20	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00340	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.102	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.

Hf4 S2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control