Cu0.99Ga1.01Se2.01

semiconductor

· Cu0.99Ga1.01Se2.01

Cu0.99Ga1.01Se2.01 is a chalcopyrite-structure semiconductor compound, a variant of copper gallium selenide (CuGaSe₂) with slight stoichiometric adjustments. This material is primarily investigated in photovoltaic research and thin-film solar cell development, where it serves as an absorber layer due to its direct bandgap and strong light absorption. The near-unity copper-to-gallium ratio and selenium-rich composition are engineered to optimize defect tolerance and carrier transport compared to stoichiometric CuGaSe₂, making it relevant for next-generation high-efficiency solar technologies that compete with established CIGS (copper indium gallium selenide) absorbers.

thin-film photovoltaicssolar cell absorber layershigh-efficiency semiconductor devicesoptoelectronic researchalternative to CIGS materialslaboratory/developmental applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.590	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.

Cu0.99Ga1.01Se2.01

Electrical Properties

Regulatory Screening

Environmental

Export Control