K2BeSe — Properties & Data | MatWorld

K2BeSe

ceramic

· JVASP-74430· K2BeSe

K2BeSe is an inorganic ceramic compound composed of potassium, beryllium, and selenium—a quaternary ionic ceramic belonging to the family of alkali metal chalcogenides. This material is primarily of research and developmental interest rather than established in high-volume industrial production; it represents exploration into wide-bandgap semiconductors and ionic ceramics with potential for optical, thermal, or electronic applications where beryllium-containing compounds offer unique properties unavailable in more conventional alternatives.

experimental semiconductor researchwide-bandgap optoelectronicshigh-temperature ceramic matrixthermal management compoundsion-conducting electrolytes

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	19.16	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2700	-	DFT · OptB88vdW
Shear Modulus(G)	13.43	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	2.384	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.195	eV	DFT · OptB88vdW
↳	1.558	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	10.42	-	DFT · OptB88vdW
↳	7.367	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.7000	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.087	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00329	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00197	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-342.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	335.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	31.53	%	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)	0.8164	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.1013	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.

K2BeSe

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental