Lu4 Cu4 S8

semiconductor

· Lu4 Cu4 S8

Lu₄Cu₄S₈ is a quaternary sulfide semiconductor compound combining lutetium, copper, and sulfur in a fixed stoichiometric ratio. This is a research-phase material studied primarily in solid-state chemistry and materials science; it belongs to the family of mixed-metal sulfides with potential applications in photovoltaics, thermoelectrics, and optoelectronic devices due to its tunable band gap and layered structural possibilities. The combination of rare-earth (lutetium) and transition-metal (copper) cations in a sulfide framework offers opportunities for engineering both electronic and thermal transport properties, making it of interest where conventional binary or ternary semiconductors reach performance limits.

photovoltaic absorbers (research)thermoelectric materials (research)solid-state optoelectronicsrare-earth compound developmentadvanced semiconductor research

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	1.846	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	-1.482	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.

Lu4 Cu4 S8

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control