Cu1 Au3

semiconductor

· Cu1 Au3

Cu1Au3 is an intermetallic compound composed of copper and gold in a 1:3 atomic ratio, classified as a semiconductor material. This compound belongs to the family of noble metal intermetallics and is primarily of research interest for studying electronic, optical, and catalytic properties in gold-copper systems. The material is not widely deployed in volume production, but represents an important composition point in the Cu-Au phase diagram for investigating how stoichiometric control affects bandgap, carrier mobility, and surface reactivity in precious-metal alloy systems.

research and developmentoptoelectronic devices (experimental)catalysis applications (high-selectivity reactions)thin-film semiconductorsintermetallic phase studiesgold-copper alloy engineering

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	21,151.3	ksi	—
Shear Modulus(G)	3,501.2	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00370	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.01900	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.

Cu1 Au3

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control