Cu0.9In1.1Se2.1

semiconductor

· Cu0.9In1.1Se2.1

Cu0.9In1.1Se2.1 is a chalcopyrite-structured compound semiconductor with copper, indium, and selenium—a variant of the CuInSe2 family widely studied for photovoltaic and optoelectronic applications. This material is primarily investigated in research and development contexts for thin-film solar cells, where it offers tunable bandgap, high absorption coefficients, and potential cost advantages over silicon-based alternatives. The slight stoichiometric deviation (excess indium, excess selenium) is typical of optimized formulations aimed at improving defect management and carrier transport in laboratory and pilot-scale device prototypes.

thin-film photovoltaicssolar cells (CIGS family)optoelectronic researchlight detection and sensingnext-generation energy conversionlaboratory/prototype development

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.060	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.

Cu0.9In1.1Se2.1

Electrical Properties

Regulatory Screening

Environmental

Export Control