Cu4 I4

semiconductor

· Cu4 I4

Cu₄I₄ is a copper iodide semiconductor compound belonging to the family of metal halide semiconductors, which have attracted significant research interest for optoelectronic and photovoltaic applications. This material is primarily investigated in academic and industrial research contexts rather than established high-volume production, with potential applications in light-emitting devices, photodetectors, and next-generation solar cells where its semiconductor properties and stability characteristics offer advantages over purely organic or all-inorganic alternatives. Engineers consider copper iodide compounds when seeking materials with tunable bandgaps, lower toxicity profiles compared to lead-based halides, and the ability to function in flexible or solution-processable device architectures.

optoelectronic devices (research)photovoltaic cells (emerging)photodetectorslight-emitting applicationsflexible electronics (developmental)semiconductor thin films

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	5,941.8	ksi	—
Shear Modulus(G)	2,021.8	ksi	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.253	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-0.1510	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.

Cu4 I4

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control