CsK2Bi — Properties & Data | MatWorld

CsK2Bi

ceramic

· CsK2Bi

CsK₂Bi is an intermetallic ceramic compound containing cesium, potassium, and bismuth, belonging to the family of complex metal halides and intermetallic phases. This material is primarily of research and theoretical interest rather than established industrial production, with potential applications in solid-state chemistry, thermoelectric studies, and exploratory work on bismuth-containing functional ceramics. The compound's unique composition makes it relevant to researchers investigating novel ionic conductors, photonic materials, or alternative semiconductor phases, though industrial adoption remains limited compared to conventional ceramic or metallic alternatives.

materials research and developmentsolid-state chemistry experimentationthermoelectric material studiesbismuth-based functional ceramicsexploratory ceramic compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1510	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	0.6200	eV	DFT · OptB88vdW
↳	1.398	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	22.89	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)	4.636	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.1300	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.270	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.000250	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00308	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-45.00	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	399.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.71	%	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)	-0.4920	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.

CsK2Bi

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental