CuInSe2

semiconductor
· CuInSe2

CuInSe₂ is a ternary chalcopyrite semiconductor compound composed of copper, indium, and selenium, belonging to the I-III-VI₂ family of direct bandgap semiconductors. It is primarily employed as an absorber layer in thin-film photovoltaic (PV) devices, particularly in CIGS (copper indium gallium selenide) solar cells, where it enables efficient light-to-electricity conversion with lower material consumption than silicon-based alternatives. The material is notable for its high optical absorption coefficient, tunable bandgap, and established scalability to large-area manufacturing, making it attractive for space applications, building-integrated photovoltaics, and flexible solar technologies where weight and efficiency density are critical.

thin-film solar cellsphotovoltaic absorber layersspace power systemsbuilding-integrated PV (BIPV)flexible electronicsoptoelectronic devices

Compliance & Regulations

?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Band Gap(Eg)
—
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.