CuAlS2

semiconductor

· CuAlS2

CuAlS₂ is a ternary semiconductor compound combining copper, aluminum, and sulfur in a chalcopyrite-like crystal structure. This material is primarily of research interest for optoelectronic and photovoltaic applications, where its direct bandgap and tunable optical properties make it attractive for light emission and energy conversion devices. While not yet commercialized at scale, CuAlS₂ belongs to the broader family of I-III-VI semiconductors that show promise as alternatives to conventional III-V compounds in specialized applications requiring cost-effectiveness or unique bandgap engineering.

photovoltaic researchoptoelectronic deviceslight-emitting semiconductorssolar cells (experimental)thin-film electronics researchbandgap engineering

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	3.500	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.

CuAlS2

Electrical Properties

Regulatory Screening

Environmental

Export Control