KBiCu2S3

semiconductor

· KBiCu2S3

KBiCu₂S₃ is a ternary semiconductor compound composed of potassium, bismuth, copper, and sulfur, belonging to the class of mixed-metal sulfides. This material is primarily of research interest for optoelectronic and thermoelectric applications, as the combination of heavy bismuth and copper sulfide phases offers potential for tunable band gaps and phonon scattering. While not yet widely deployed in commercial products, materials in this family are investigated as alternatives to lead-based semiconductors in photovoltaics, solid-state cooling devices, and mid-infrared optics due to their earth-abundant elemental composition and potential environmental advantages.

photovoltaic absorbers (research)thermoelectric generatorsmid-infrared detectorslead-free semiconductor alternativessolid-state cooling devicesoptoelectronic device development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.290	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.

KBiCu2S3

Electrical Properties

Regulatory Screening

Environmental

Export Control