Au2S — Properties & Data | MatWorld

Au2S

Name: Au2S
Brand: MatWorld

metal

· JVASP-2130· Au2S

Au₂S is a gold sulfide intermetallic compound that belongs to the class of precious metal chalcogenides. This material is primarily of research and specialized industrial interest rather than a commodity engineering material, with applications driven by its unique combination of metallic and semiconducting properties. Au₂S and related gold sulfides are investigated for electronic and photonic devices, corrosion-resistant coatings, and catalytic applications where the gold content provides both chemical stability and functional activity.

Research semiconductorsCorrosion-resistant coatingsCatalytic surfacesElectronic thin filmsSpecialized alloys for extreme environments

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	74.27	GPa	DFT · OptB88vdW
Poisson's Ratio(ν)	0.4700	-	DFT · OptB88vdW
Shear Modulus(G)	5.020	GPa	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	9.501	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	2.149	eV	DFT · OptB88vdW
↳	2.625	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	7.412	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.872	-	DFT · OptB88vdW
↳	5.939	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4100	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.670	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00418	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00211	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-238.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	364.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	10.26	%	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.

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)	-0.04796	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

Export Control

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.

Au2S

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control