CsCu3S2

metal

· CsCu3S2

CsCu₃S₂ is a ternary chalcogenide compound combining cesium, copper, and sulfur—a semiconducting or semimetallic material belonging to the broader family of metal sulfides. This is a research-phase compound rather than an established engineering material, being investigated primarily for its potential thermoelectric and optoelectronic properties due to the electronic structure contributions from both the alkali metal (Cs) and transition metal (Cu) components.

thermoelectric energy conversion (research)optoelectronic device layers (experimental)solid-state physics studiessemiconductor research compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	15.25	GPa	—
Shear Modulus(G)	7.644	GPa	—

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

Property	Value	Unit	Conditions	Source
Dielectric Constant (Relative Permittivity)(εr)	6.623 range 5.638–7.607median of 2 measurements	-	—

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.

CsCu3S2

Mechanical Properties

Electrical Properties

Regulatory Screening

Environmental

Export Control