K4 Cu2 Sb2

semiconductor

· K4 Cu2 Sb2

K4Cu2Sb2 is a ternary intermetallic semiconductor compound combining potassium, copper, and antimony elements. This material belongs to the family of complex metallic semiconductors and represents a research-phase compound being investigated for electronic and thermoelectric applications where unconventional crystal structures and mixed-valence chemistry offer potential advantages over conventional binary semiconductors. Engineers would evaluate this material for niche applications requiring specific bandgap properties, phonon-scattering behavior, or integration into device structures where its distinct electronic structure provides performance benefits unavailable from common semiconductor alternatives.

thermoelectric devices (research phase)solid-state electronics (experimental)low-thermal-conductivity semiconductorsquantum materials researchadvanced optoelectronics (developmental)

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	2,960.4	ksi	—
Shear Modulus(G)	1,596.4	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.248	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.4000	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.

K4 Cu2 Sb2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control