CsK2Sb — Properties & Data | MatWorld

CsK2Sb

ceramic

· CsK2Sb

CsK₂Sb is an intermetallic ceramic compound belonging to the alkali metal antimony family, representing a specialized class of materials with potential applications in thermoelectric and photonic devices. This is primarily a research-stage material studied for its electronic and thermal properties rather than a widely commercialized engineering ceramic. The compound's notably low density combined with its ceramic nature makes it of interest in fundamental materials science for exploring structure-property relationships in intermetallic systems.

thermoelectric researchphotonic device developmentintermetallic compound studiesspecialized electronic applicationsexperimental materials science

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	2,214.7	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2300	-	DFT · OptB88vdW
Shear Modulus(G)	1,528.7	ksi	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1263	lb/in³	DFT · OptB88vdW

Verified Unverified Low confidence (<80%) Link to source

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.207	eV	DFT · OptB88vdW
↳	2.045	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	19.59	-	DFT · PBE
↳	12.82 range 7.661–17.98median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.962	-	DFT · OptB88vdW
↳	5.864	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.1800	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.240	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.00169	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00325	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-134.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	409.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	22.01	%	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)	-0.5317	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.

CsK2Sb

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental