K2TeSe3 — Properties & Data | MatWorld

K2TeSe3

ceramic

· JVASP-13388· K2TeSe3

K2TeSe3 is a mixed chalcogenide ceramic compound combining potassium, tellurium, and selenium—a layered ionic material belonging to the family of complex metal chalcogenides. This is primarily a research-phase material studied for its electronic and photonic properties rather than an established commercial ceramic; the K2TeSe3 family is of particular interest in solid-state chemistry for potential thermoelectric applications, photovoltaic device layers, and optical sensing due to the tunable band structure afforded by the tellurium-selenium combination.

thermoelectric materials (research)photovoltaic device layerssolid-state optical sensorschalcogenide glass precursorsinfrared optics (exploratory)materials chemistry research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1273	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.615	eV	DFT · OptB88vdW
↳	2.662	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.207	-	DFT · OptB88vdW
↳	4.383	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00172	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000195	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-301.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	361.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	9.540	%	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)	-0.7506	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

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.

K2TeSe3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental