Cu2 Se1

semiconductor

· Cu2 Se1

Cu2Se (copper selenide) is a direct bandgap semiconductor compound belonging to the copper chalcogenide family, characterized by its layered crystal structure and mixed-valence copper ions. This material is investigated primarily in research contexts for thermoelectric energy conversion, photovoltaic devices, and optoelectronic applications, where its tunable bandgap and hole-dominated conductivity offer advantages over traditional semiconductors in specific temperature and wavelength ranges. Cu2Se is notable for its potential in waste-heat recovery systems and as a building block for heterostructured solar cells, though it remains less commercially established than silicon or III-V compounds due to stability and manufacturing challenges.

thermoelectric power generationphotovoltaic research devicesinfrared detectorsthin-film optoelectronicsmaterials research—semiconductorswaste-heat energy harvesting

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	83.10	GPa	—
Shear Modulus(G)	4.740	GPa	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)	0.2363	eV	—

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

Property	Value	Unit	Conditions	Source
Formation Energy(ΔHf)	0.02200	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 Se1

Mechanical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control