KTaAg2Se4 — Properties & Data | MatWorld

KTaAg2Se4

metal

· JVASP-54924· KTaAg2Se4

KTaAg2Se4 is a ternary intermetallic compound combining potassium, tantalum, silver, and selenium—a selenide-based material with potential applications in solid-state electronics and thermoelectric devices. This is a research-phase compound rather than a commercial material; it belongs to an emerging family of complex metal chalcogenides being investigated for their electronic and phonon-transport properties. Engineers and materials scientists study such compounds primarily to understand structure-property relationships that could lead to improved thermoelectric conversion, ionic conductivity, or photonic applications.

thermoelectric devices (research)solid-state electronics (exploratory)photovoltaic semiconductors (experimental)materials screening and discoverycrystallographic studieslow-dimensional transport phenomena

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	5.275	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.660	eV	DFT · OptB88vdW
↳	1.983	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.811	-	DFT · OptB88vdW
↳	6.115	-	DFT · TBmBJ
Electron Effective Mass(m*e)	2.973	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.247	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00124	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00145	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-297.5	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	320.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	23.37	%	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)	-0.6490	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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KTaAg2Se4

Physical Properties

Electrical Properties

Other Properties

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