K2Ag2SnSe4 — Properties & Data | MatWorld

K2Ag2SnSe4

metal

· JVASP-54805· K2Ag2SnSe4

K2Ag2SnSe4 is a quaternary chalcogenide compound containing potassium, silver, tin, and selenium—a research-phase material rather than an established commercial alloy. This compound belongs to the family of metal chalcogenides being investigated for semiconductor and photovoltaic applications, particularly where tunable band gaps and mixed-metal compositions offer advantages over binary or ternary systems. Engineers would consider this material primarily in advanced optoelectronic research contexts, as quaternary systems like this can offer improved photon absorption, tunable electronic properties, and potential cost or performance benefits over simpler alternatives; however, it remains largely in academic or early development stages with limited industrial deployment.

photovoltaic researchsemiconductor band-gap engineeringthermoelectric materials developmentinfrared detector materialsmaterials research and prototyping

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	4.793	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.7770	eV	DFT · OptB88vdW
↳	1.854	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.944	-	DFT · OptB88vdW
↳	5.333	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000352	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00116	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-69.36	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	326.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	26.15	%	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)	-0.6623	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

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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.

K2Ag2SnSe4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

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