KAg2PS4 — Properties & Data | MatWorld

KAg2PS4

Name: KAg2PS4
Brand: MatWorld

semiconductor

· KAg2PS4

KAg₂PS₄ is an experimental quaternary semiconductor compound combining potassium, silver, phosphorus, and sulfur into a mixed-anion chalcogenide structure. This material belongs to the family of silver-based sulfide/phosphide semiconductors under active research for solid-state ionic and photonic applications. While not yet commercialized at scale, compounds in this class are investigated for their potential in all-solid-state batteries, photovoltaic devices, and fast-ion conductors due to silver's high ionic mobility and the tunable bandgap available through multinary semiconductor design.

solid-state electrolytesall-solid-state batteriesphotodetectorsion conductorsthermoelectric devicesresearch/development materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	46.49	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3600	-	DFT · OptB88vdW
Shear Modulus(G)	14.61	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	3.798	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	3.020	eV	Measured
↳	1.057	eV	DFT · OptB88vdW
↳	2.373	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	11.03	-	DFT · OptB88vdW
↳	8.415 range 6.341–10.49median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.470	-	DFT · OptB88vdW
↳	4.820	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.2900	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.6133	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.4137	C/m²	DFT · OptB88vdW
↳	0.07251	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.000491	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00126	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-74.40	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	177	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	15.10	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5373	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

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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.

KAg2PS4

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