GePb2S4

ceramic

· JVASP-29486· GePb2S4

GePb₂S₄ is a mixed-metal chalcogenide ceramic compound combining germanium, lead, and sulfur elements. This material belongs to the family of metal sulfide ceramics, which are primarily studied for their potential in infrared optics, photovoltaic applications, and semiconductor device research. As a relatively specialized compound, GePb₂S₄ is of interest in materials research for exploring novel optical and electronic properties in the infrared spectrum, where lead and germanium sulfides have shown promise for radiation-resistant windows, thermal imaging systems, and emerging photonic applications.

infrared optics and windowssemiconductor researchphotovoltaic device developmentradiation-resistant coatingsthermal imaging componentsadvanced ceramics research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	0.2014	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	1.926	eV	DFT · OptB88vdW
↳	2.785	eV	DFT · TBmBJ
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	9.129	-	DFT · OptB88vdW
↳	6.696	-	DFT · TBmBJ
Electron Effective Mass(m*e)	1.727	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	2.300	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.00131	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.000530	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-244.4	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	291.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	7.430	%	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)	0.00470	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5372	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.

GePb2S4 — Properties & Data | MatWorld

GePb2S4

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental