K2 Ta2 Ag4 Se8

semiconductor

· K2 Ta2 Ag4 Se8

K2Ta2Ag4Se8 is a mixed-metal selenide semiconductor compound combining tantalum, silver, potassium, and selenium in a layered or complex crystal structure. This is a research-phase material primarily studied for its potential in photovoltaic, thermoelectric, and optoelectronic applications where the combination of heavy metal (Ta) and noble metal (Ag) sites may enable tunable band gaps and carrier transport properties. As an experimental quaternary selenide, it represents the broader class of multinary semiconductors being investigated to overcome efficiency and cost limitations of conventional silicon and chalcogenide devices.

photovoltaic researchthermoelectric devicesoptoelectronic sensorsmaterials researchthin-film semiconductorsband-gap engineering

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.660	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.6490	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 Ta2 Ag4 Se8

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control