SiH8 — Properties & Data | MatWorld

SiH8

ceramic

· JVASP-33859· SiH8

SiH8 (octasilane) is an experimental silicon hydride ceramic compound belonging to the silane family, primarily investigated in materials research rather than established in commercial production. This material exists mainly in academic and developmental contexts, where it is studied for potential applications in semiconductor processing, thin-film deposition, and advanced ceramic synthesis. The silane family offers promise for low-density ceramic precursors and chemical vapor deposition (CVD) feedstocks, though SiH8 specifically remains a research compound with limited industrial adoption compared to more established silicon carbide or silica-based ceramics.

semiconductor precursor materialschemical vapor deposition (CVD)thin-film synthesisexperimental ceramics researchsilane-derived compositesmaterials chemistry development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	433.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2800	-	DFT · OptB88vdW
Shear Modulus(G)	248	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.01994	lb/in³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	7.290	eV	DFT · OptB88vdW
↳	9.166	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	2.278	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	2.201	-	DFT · OptB88vdW
↳	1.760	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.01230	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00200	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000549	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-399.8	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	499.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	0.000	%	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00440	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	0.00272	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

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.

SiH8

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental