Cu2 I2

semiconductor

· Cu2 I2

Cu2I2 (copper(I) iodide) is a semiconductor compound belonging to the I-III-VI family of direct bandgap semiconductors, characterized by a cuprous cation paired with iodide anions in a crystalline lattice. This material is primarily investigated in research contexts for optoelectronic and photovoltaic applications, where its direct bandgap and tunable electronic properties make it an attractive alternative to lead halide perovskites and other toxic semiconductor systems. Engineers and researchers select Cu2I2 for its potential in thin-film solar cells, light-emitting devices, and photodetectors due to its earth-abundant constituent elements, relatively low toxicity compared to conventional semiconductors, and compatibility with solution-processing manufacturing techniques.

thin-film photovoltaicsperovskite alternativesoptoelectronic devicesphotodetectorslight-emitting applicationsresearch semiconductors

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	3,492.2	ksi	—
Shear Modulus(G)	1,639.9	ksi	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.647	eV	—

Verified Unverified Low confidence (<80%) Link to source

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.1450	eV/atom	—

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.

Cu2 I2

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control