BeGeAs2

ceramic

· BeGeAs2

BeGeAs₂ is a quaternary ceramic compound combining beryllium, germanium, and arsenic elements, representing an advanced material in the chalcogenide and semiconductor ceramic family. This material is primarily of research and developmental interest for optoelectronic and photonic applications where its wide bandgap and crystalline structure offer potential advantages in infrared transmission, nonlinear optical devices, and high-frequency semiconductor applications. Engineers consider BeGeAs₂ for specialized photonic systems where conventional semiconductors or glasses are insufficient, though industrial adoption remains limited compared to established alternatives like GaAs or ZnSe due to material maturity and manufacturing challenges.

infrared optics and windowsnonlinear optical deviceswide-bandgap semiconductorsphotonic research componentshigh-frequency RF applicationsadvanced ceramics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	10,209.2	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2000	-	DFT · OptB88vdW
Shear Modulus(G)	7,752.3	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1713	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	0.6770	eV	DFT · OptB88vdW
↳	1.346	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	14.88	-	DFT · OptB88vdW
↳	13.75 range 13.20–14.29median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	13.85	-	DFT · OptB88vdW
↳	9.980	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4167	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.3667	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.4162	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00216	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00317	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-181.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	225.7	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	33.95	%	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)	-0.1997	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.

BeGeAs2 — Properties & Data | MatWorld

BeGeAs2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental