Au4 S2

semiconductor

· Au4 S2

Au₄S₂ is a gold sulfide semiconductor compound combining noble metal and chalcogen elements. This material belongs to the family of metal sulfide semiconductors, which are primarily of research interest for optoelectronic and photovoltaic applications rather than established commercial use. Gold sulfides show promise in nanoelectronics, photocatalysis, and thin-film device research due to their unique electronic structure, though practical engineering adoption remains limited compared to more conventional semiconductors.

experimental semiconductor devicesphotocatalytic applicationsoptoelectronic researchnanostructured thin filmsmaterials science research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	74.27	GPa	—
Shear Modulus(G)	5.020	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.149	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.04800	eV/atom	—

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

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.

Au4 S2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control