K1 Cu2 Se2

semiconductor

· K1 Cu2 Se2

K₁Cu₂Se₂ is a ternary chalcogenide semiconductor compound combining potassium, copper, and selenium in a layered crystal structure. This material is primarily of research interest for thermoelectric and photovoltaic applications, where its narrow bandgap and mixed-metal composition offer potential for solid-state energy conversion. While not yet widely commercialized, compounds in this copper-selenium-alkali metal family are being investigated as alternatives to lead-based thermoelectrics and as light-absorbing layers in next-generation thin-film solar cells.

thermoelectric devicesphotovoltaic researchsolid-state energy conversionthin-film semiconductorslaboratory/experimental compounds

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00510	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.5730	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.

K1 Cu2 Se2

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control