KNbAg2Se4

metal

· JVASP-56730· KNbAg2Se4

KNbAg₂Se₄ is a ternary chalcogenide compound combining potassium, niobium, silver, and selenium—a material class typically studied for semiconducting and ion-conducting properties. This is primarily a research compound rather than an established industrial material; compounds in this family are investigated for potential applications in thermoelectric energy conversion, solid-state ionics, and optoelectronic devices where the combination of heavy elements and layered crystal structures can enable favorable electronic band gaps and phonon scattering. Engineers considering this material would be working in advanced materials development or exploratory device research rather than established manufacturing.

thermoelectric devicessolid-state ion conductorsresearch semiconductorschalcogenide optoelectronicsexploratory photovoltaics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1691	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	1.390	eV	DFT · OptB88vdW
↳	1.648	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.437	-	DFT · OptB88vdW
↳	6.289	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00104	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00144	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-293.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	319.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	30.20	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00500	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.6429	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

Export Control

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.

KNbAg2Se4 — Properties & Data | MatWorld

KNbAg2Se4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control