K4 Ge4 Pb2 S12

semiconductor

· K4 Ge4 Pb2 S12

K4Ge4Pb2S12 is a quaternary sulfide semiconductor compound combining potassium, germanium, lead, and sulfur elements in a layered crystal structure. This material belongs to the family of heavy-metal chalcogenides and is primarily studied in research contexts for its potential in thermoelectric applications and infrared optics, where the combination of heavy elements and sulfur coordination offers tunable bandgap and phonon-scattering properties. Engineers consider such compounds as alternatives to conventional thermoelectric materials (like Bi2Te3) and infrared window materials, particularly where earth-abundant or less-toxic element substitution is valued over maximum performance metrics.

thermoelectric power generationinfrared optics and windowsmaterials research and developmentsolid-state physics studieschalcogenide semiconductors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.041	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.8130	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 Ge4 Pb2 S12

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control