KCu4AsS4

semiconductor

· KCu4AsS4

KCu4AsS4 is a quaternary semiconductor compound combining copper, arsenic, and sulfur in a mixed-valence framework. This material belongs to the family of complex chalcogenide semiconductors and is primarily of research interest rather than established in mainstream production. The compound's potential applications center on solid-state electronics and photovoltaic research, where layered or complex crystal structures can enable novel electronic properties distinct from binary semiconductors; engineers considering this material should treat it as an experimental candidate requiring specialized characterization for their specific device requirements.

experimental semiconductorsphotovoltaic researchsolid-state electronic deviceschalcogenide materialsthermoelectric applicationsmaterials research prototypes

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	44.90	GPa	—
Poisson's Ratio(ν)	0.3200	-	—
Shear Modulus(G)	19.16	GPa	—

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.175	kg/m³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.900	eV	—
↳	1.336	eV	—
Seebeck Coefficient(S)	-302.3	µV/K	—

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.

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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.00130	eV/atom	—
Formation Energy(ΔHf)	-0.4410	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.

KCu4AsS4

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control