K2TeS3

ceramic

· JVASP-59033· K2TeS3

K2TeS3 is a mixed-metal chalcogenide ceramic compound combining potassium, tellurium, and sulfur. This material belongs to the family of metal telluride-sulfides and remains primarily in the research phase, with investigation focused on its potential as a solid-state ion conductor and semiconductor for advanced energy storage and photovoltaic applications. The combination of tellurium and sulfur with an alkali metal offers prospects for ionic conductivity and optical properties relevant to next-generation battery and solar technologies.

solid-state electrolytes (research)battery materials developmentphotovoltaic absorbers (experimental)thermal energy conversionmaterials chemistry researchsemiconductor studies

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.09700	lb/in³	DFT · OptB88vdW

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	2.127	eV	DFT · OptB88vdW
↳	3.326	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	5.192	-	DFT · OptB88vdW
↳	3.875	-	DFT · TBmBJ
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00179	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000126	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-253	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	409.2	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.140	%	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)	-0.8443	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.

K2TeS3 — Properties & Data | MatWorld

K2TeS3

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental