Si3PH9 — Properties & Data | MatWorld

Si3PH9

ceramic

· JVASP-24834· Si3PH9

Si3PH9 is a phosphorus-containing silicon ceramic compound belonging to the family of silicon phosphide ceramics. This material represents an emerging research compound rather than an established commercial ceramic, likely being investigated for its potential to combine silicon's thermal properties with phosphorus additives to achieve novel mechanical or functional characteristics. The ultra-low density suggests potential applications in lightweight structural ceramics or porous ceramic matrices, though industrial adoption and performance data remain limited compared to conventional silicon carbide or nitride ceramics.

experimental ceramic researchlightweight structural applicationshigh-temperature insulationaerospace material developmentthermal management systemsadvanced composite reinforcement

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	1.151	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	4.099	eV	DFT · OptB88vdW
↳	5.274	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	3.687	-	DFT · OptB88vdW
↳	2.830	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000882	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000694	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-334.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	284.5	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)	0.00920	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.01531	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.

Si3PH9

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental