Cu2GeSe3

semiconductor

· Cu2GeSe3

Cu2GeSe3 is a quaternary semiconductor compound combining copper, germanium, and selenium in a specific stoichiometric ratio, belonging to the broader family of chalcogenide semiconductors. This material is primarily of research interest for photovoltaic and thermoelectric applications, where its direct bandgap and layered crystal structure offer potential advantages in energy conversion efficiency and thermal management compared to traditional binary or ternary semiconductors. Cu2GeSe3 remains largely experimental; it is investigated for thin-film solar cells, photodetectors, and solid-state thermoelectric devices where the combination of reasonable mechanical stiffness and semiconducting properties may enable lightweight, high-efficiency energy devices.

thin-film photovoltaicsphotodetectorsthermoelectric generatorsresearch semiconductorsenergy harvesting devicesoptoelectronic materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)	8,691	ksi	—
Shear Modulus(G)	3,742.9	ksi	—

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1958	lb/in³	—

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

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	0.8500	eV	—
↳	0.000	eV	—
Magnetic Moment(μB)	0.000	µB	—
Seebeck Coefficient(S)	1.973	µV/K	—

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.01170	eV/atom	—
Formation Energy(ΔHf)	-0.2388	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.

Cu2GeSe3

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control