BaGe2S5 — Properties & Data | MatWorld

BaGe2S5

Name: BaGe2S5
Brand: MatWorld

ceramic

· JVASP-24800· BaGe2S5

BaGe2S5 is a barium germanium sulfide ceramic compound belonging to the chalcogenide ceramics family. This material is primarily of research interest for infrared optical and photonic applications, where its wide transparency window in the mid-to-far infrared region makes it suitable for lens, window, and waveguide components. While not yet established in mainstream industrial production, BaGe2S5 represents an important alternative in the chalcogenide optics space, offering potential advantages over more common materials like zinc sulfide or germanium in specific wavelength ranges and thermal stability contexts.

infrared optics and windowsthermal imaging systemsphotonic waveguidesresearch and developmentmid-infrared spectroscopyadvanced ceramic composites

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	3.450	kg/m³	DFT · OptB88vdW

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

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	2.088	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	6.121	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	1.370	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.040	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00127	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00177	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-287.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	308.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.9123	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.

BaGe2S5

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental