MoS2 — Properties & Data | MatWorld

MoS2

Name: MoS2
Brand: MatWorld

metal

· MoS2

Molybdenum disulfide (MoS₂) is a layered transition metal dichalcogenide compound that exists naturally as the mineral molybdenite and can be synthesized or exfoliated into thin-film and nanoscale forms. It is widely used in tribological coatings, solid lubricants, and catalytic applications due to its low friction characteristics and chemical stability, with emerging applications in 2D electronics, optoelectronics, and energy storage where its semiconductor properties and weak interlayer bonding make it attractive for device integration. Engineers select MoS₂ over conventional lubricants in extreme environments (vacuum, high temperature, corrosive conditions) and over graphene in applications requiring a direct bandgap for light emission or photodetection.

dry film lubricantsvacuum bearing coatingscatalytic hydrogen evolution2D semiconductor devicestribological coatingsphotodetectors and optoelectronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	51.32	GPa	DFT · OptB88vdW
Exfoliation Energy(Eexf)	89.43	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.1900	-	DFT · OptB88vdW
Shear Modulus(G)	45.47	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.875	kg/m³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	0.9220	eV	DFT · OptB88vdW
↳	1.337	eV	DFT · TBmBJ
↳	1.420	eV	DFT · HSE06
Dielectric Constant (Relative Permittivity)(εr)	9.760	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	13.95	-	DFT · OptB88vdW
↳	13.23	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.5867	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.6233	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.5156	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00421	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000858	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-318.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	151.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.99	%	DFT · TBmBJ

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.2625	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.6991	eV/atom	DFT · OptB88vdW
↳	-0.9540	eV/atom	Measured

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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

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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.

MoS2

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