K2NbCuSe4 — Properties & Data | MatWorld

K2NbCuSe4

Name: K2NbCuSe4
Brand: MatWorld

semiconductor

· K2NbCuSe4

K2NbCuSe4 is a quaternary chalcogenide semiconductor compound containing potassium, niobium, copper, and selenium. This is an experimental research material belonging to the family of complex metal selenides, currently investigated for potential optoelectronic and photovoltaic applications where layered or ternary chalcogenides show promise. The material's interest lies in tunable electronic structure and potential high absorption coefficients typical of semiconducting selenides, though it remains primarily in early-stage development rather than established commercial use.

photovoltaic researchsemiconductor optoelectronicsexperimental thin filmslight absorption materialschalcogenide device developmentmaterials discovery

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	3.962	kg/m³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	2.140	eV	Measured
↳	1.667	eV	DFT · OptB88vdW
↳	1.748	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.880	-	DFT · OptB88vdW
↳	5.915	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000951	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00146	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-325.7	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	309.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	28.39	%	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)	-0.9794	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.

K2NbCuSe4

Physical Properties

Electrical Properties

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