K4 Ag4 Sn2 Se8

semiconductor

· K4 Ag4 Sn2 Se8

K4Ag4Sn2Se8 is a quaternary chalcogenide semiconductor compound combining potassium, silver, tin, and selenium in a layered crystal structure. This material belongs to the broader family of metal chalcogenides, which are actively researched for thermoelectric and optoelectronic applications due to their tunable band gaps and mixed-valence chemistry. As a relatively unexplored composition, it represents potential for mid-range energy conversion and sensing applications where the combination of heavy metal atoms (Sn, Ag) with chalcogen bonding can provide favorable phonon-scattering properties and electronic tunability.

thermoelectric energy harvestinginfrared detectorssolid-state electronics researchphotovoltaic absorbersquantum materials developmentsemiconductor optoelectronics

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.7770	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.6620	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 Ag4 Sn2 Se8

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control