K4 Co2 Se4

semiconductor

· K4 Co2 Se4

K₄Co₂Se₄ is a quaternary semiconductor compound combining potassium, cobalt, and selenium in a layered crystal structure. This is a research-phase material within the family of metal chalcogenides, studied primarily for its electronic and optical properties rather than established industrial production. The compound represents an emerging class of semiconductors of interest for optoelectronic and thermoelectric applications where the combination of earth-abundant and semi-rare elements offers potential advantages in cost or performance compared to conventional III-V or II-VI semiconductors.

experimental optoelectronicsthermoelectric devices (research)photovoltaic materials (exploratory)thin-film electronicsmaterials research & developmentsemiconductor screening

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.000800	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.7960	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 Co2 Se4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control