Er4 Cu4 S8

semiconductor

· Er4 Cu4 S8

Er₄Cu₄S₈ is a ternary chalcogenide semiconductor compound combining erbium, copper, and sulfur in a fixed stoichiometric ratio. This is a research-phase material studied primarily for its electronic and optical properties within the broader family of rare-earth transition-metal sulfides, which show potential for photovoltaic and optoelectronic applications due to their tunable bandgaps and mixed-metal coordination chemistry.

photovoltaic researchoptoelectronic devicesthermoelectric materials (experimental)thin-film semiconductorsrare-earth material systems

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	11,221.1	ksi	—
Shear Modulus(G)	4,812.4	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.761	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.488	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.

Er4 Cu4 S8

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control