K2 Sn2 Se4

semiconductor

· K2 Sn2 Se4

K2Sn2Se4 is a layered chalcogenide semiconductor compound composed of potassium, tin, and selenium, belonging to the family of post-transition metal selenides. This material is primarily of research interest for optoelectronic and photovoltaic applications, where its layered structure and tunable bandgap make it a candidate for next-generation solar cells, photodetectors, and other light-responsive devices. Compared to conventional semiconductors like silicon, chalcogenide compounds offer potential advantages in solution processability, bandgap tunability, and compatibility with flexible substrates, though K2Sn2Se4 remains largely in the exploratory stage rather than established commercial production.

photovoltaic researchphotodetectorsoptoelectronic devicesthin-film solar cellsnext-generation semiconductorsmaterials research and development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.00170	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.7640	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 Sn2 Se4

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control