K4 As4 Se8

semiconductor

· K4 As4 Se8

K₄As₄Se₈ is a quaternary chalcogenide semiconductor compound containing potassium, arsenic, and selenium elements. This material belongs to the family of complex chalcogenide semiconductors, which are primarily of research interest for exploring novel electronic and photonic properties rather than established industrial applications. Chalcogenide semiconductors like this composition are investigated for potential use in infrared optics, phase-change memory devices, and thermoelectric applications, though K₄As₄Se₈ specifically remains largely a laboratory compound; engineers considering this material should treat it as an experimental system requiring further characterization and testing before practical deployment.

infrared optics (research)phase-change memory (exploratory)thermoelectric devices (experimental)solid-state electronics researchmaterials discovery and characterizationsemiconductor compound testing

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	2,154.7	ksi	—
Shear Modulus(G)	1,327.5	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.532	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.6450	eV/atom	—

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

Regulatory Screening

Environmental

Export Control

Quality & Standards

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.

K4 As4 Se8

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control

Quality & Standards