SiS2 — Properties & Data | MatWorld

SiS2

Name: SiS2
Brand: MatWorld

ceramic

· SiS2

Silicon disulfide (SiS₂) is a layered ceramic compound composed of silicon and sulfur atoms arranged in a two-dimensional crystalline structure. This material is primarily of research interest rather than established in mainstream industrial applications, with potential use in nanoelectronics, optoelectronics, and energy storage devices where its layered geometry enables mechanical exfoliation into thin films. Engineers considering SiS₂ are typically exploring it as a wide-bandgap semiconductor, thermal insulator, or component in next-generation device architectures where its anisotropic properties and van der Waals bonding between layers may offer advantages over conventional ceramics.

experimental semiconductors2D nanomaterials researchthermal barriersoptoelectronic devicesnanocomposites

Compliance & Regulations

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	3,548.8	ksi	DFT
↳	4,889.2	ksi	DFT · OptB88vdW
Exfoliation Energy(Eexf)	85.99	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2200	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	2,794.6	ksi	DFT
↳	3,789.8	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.08382	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	3.086	eV	DFT · OptB88vdW
↳	3.974	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	8.580	-	DFT · OptB88vdW
↳	4.020	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.060	-	DFT · OptB88vdW
↳	5.076	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.5700	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.343	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.4853	C/m²	DFT · OptB88vdW
↳	0.02040	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00184	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00178	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-202.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	360.9	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.03000	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.6803	eV/atom	DFT · OptB88vdW
↳	-0.7372	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

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.

SiS2

Mechanical Properties

Physical Properties

Electrical Properties

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Regulatory Screening

Environmental