Cu1.8S

semiconductor

· Cu1.8S

Cu1.8S is a copper sulfide compound and intrinsic semiconductor belonging to the chalcogenide family, notable for its narrow bandgap and mixed-valence copper behavior. It is primarily investigated in research contexts for thermoelectric energy conversion, photovoltaic devices, and optoelectronic applications where its tunable electrical and thermal properties offer potential advantages over conventional semiconductors. Cu1.8S represents an underexplored alternative to established materials like CdTe or PbTe, with particular promise in waste-heat recovery and portable power generation where material abundance and cost-effectiveness are driving factors.

Thermoelectric power generationPhotovoltaic/solar cellsOptoelectronic devicesWaste heat recoveryResearch semiconductorsEarth-abundant alternative materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	2.300	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.

Cu1.8S

Electrical Properties

Regulatory Screening

Environmental

Export Control