K8 Rb4 Bi4 Se12

semiconductor

· K8 Rb4 Bi4 Se12

K8Rb4Bi4Se12 is a quaternary chalcogenide semiconductor compound combining alkali metals (potassium and rubidium), bismuth, and selenium in a layered crystal structure. This material is primarily of research interest for thermoelectric and optoelectronic applications, belonging to the family of complex metal chalcogenides that show promise for solid-state energy conversion and photovoltaic devices where conventional semiconductors face limitations. The combination of heavy elements (Bi, Se) with alkali metals typically produces low thermal conductivity and tunable bandgaps, making such compounds candidates for next-generation thermoelectric generators and infrared photon detection.

thermoelectric energy conversionresearch semiconductorsinfrared photodetectorssolid-state cooling devicesphotovoltaic materials developmentlow-thermal-conductivity applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	2,344.8	ksi	—
Shear Modulus(G)	1,328.5	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.092	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.047	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.

K8 Rb4 Bi4 Se12

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control