In1.1Cu0.9Se2.1

semiconductor

· In1.1Cu0.9Se2.1

In₁.₁Cu₀.₉Se₂.₁ is a quaternary semiconductor compound combining indium, copper, and selenium in a near-stoichiometric ratio, belonging to the I-III-VI₂ family of ternary and quaternary semiconductors. This material is primarily investigated in research contexts for photovoltaic and optoelectronic applications, where tunable bandgap and improved carrier transport are sought relative to binary or simpler ternary alternatives. The copper-indium selenide base system offers potential for thin-film solar cells and light-emitting devices due to its direct bandgap properties and defect-tolerant crystal structure.

thin-film photovoltaicsresearch semiconductorsoptoelectronic devicessolar cellsexperimental materialsbandgap engineering

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.

In1.1Cu0.9Se2.1

Electrical Properties

Regulatory Screening

Environmental

Export Control