K2 Cu4 Se8 Ta2

semiconductor

· K2 Cu4 Se8 Ta2

K₂Cu₄Se₈Ta₂ is a complex quaternary semiconductor compound combining copper selenide with tantalum and potassium, belonging to the family of mixed-metal chalcogenides. This is a research-stage material studied primarily for its potential in thermoelectric and photovoltaic applications, where the combination of heavy elements (Ta) and chalcogen chemistry offers theoretical advantages in phonon scattering and bandgap engineering.

thermoelectric energy conversionphotovoltaic researchsolid-state electronicsexperimental semiconductorsmaterials research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.655	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.7440	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.

K2 Cu4 Se8 Ta2

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control