K2CuNbS4

semiconductor

· K2CuNbS4

K2CuNbS4 is a ternary sulfide semiconductor compound combining potassium, copper, niobium, and sulfur. This material is primarily of research interest for photovoltaic and optoelectronic applications, where layered metal sulfides are explored as alternatives to conventional semiconductors; it belongs to the broader family of transition-metal chalcogenides known for tunable band gaps and potential use in solar cells, photodetectors, and quantum devices.

photovoltaic researchoptoelectronic devicesphotodetectorsthin-film solar cellsquantum materials researchvisible-light catalysis

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.820	eV	—

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.

K2CuNbS4

Electrical Properties

Regulatory Screening

Environmental

Export Control