BaAg2GeS4 — Properties & Data | MatWorld

BaAg2GeS4

Name: BaAg2GeS4
Brand: MatWorld

metal

· BaAg2GeS4

BaAg₂GeS₄ is a quaternary chalcogenide compound containing barium, silver, germanium, and sulfur, representing a specialized class of materials studied for optoelectronic and nonlinear optical applications. This compound belongs to the family of metal sulfides and is primarily of research interest rather than established industrial production, with potential applications in infrared photonics, second-harmonic generation, and semiconductor device development. Engineers and researchers consider such materials when conventional alternatives (silicon, gallium arsenide, or common oxides) cannot meet requirements for specific wavelength ranges, phase-matching conditions, or nonlinear optical efficiency in demanding photonic systems.

infrared optics researchnonlinear optical materialsphotonic device developmentsemiconductor compoundsfrequency conversion applicationsexploratory optoelectronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	54.26	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3500	-	DFT · OptB88vdW
Shear Modulus(G)	18.27	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.819	kg/m³	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	0.5740	eV	DFT · OptB88vdW
↳	1.819	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	11.95	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.374	-	DFT · OptB88vdW
↳	5.678	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.2100	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.5267	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.3852	C/m²	DFT · OptB88vdW
↳	0.02920	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.000384	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000785	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-64.03	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	133.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	26.96	%	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)	-0.8522	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

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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.

BaAg2GeS4

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