CdGa2Se4
semiconductor· CdGa2Se4
CdGa₂Se₄ is a ternary II-VI semiconductor compound combining cadmium, gallium, and selenium in a chalcopyrite crystal structure. This material is primarily investigated for optoelectronic and photovoltaic applications, particularly in research contexts exploring wide-bandgap semiconductors for high-efficiency solar cells, radiation detectors, and infrared optical devices. Engineers consider CdGa₂Se₄ when conventional binary semiconductors (GaAs, CdSe) cannot meet bandgap or lattice-matching requirements, though its commercial adoption remains limited compared to established alternatives, making it most relevant for specialized R&D projects rather than high-volume manufacturing.
photovoltaic cellsradiation detectioninfrared opticssemiconductor researchwide-bandgap deviceslattice-matched heterostructures
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K) | 37.20 | GPa | — | ||
Poisson's Ratio(ν) | 0.2700 | - | — | ||
Shear Modulus(G) | 21.74 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 5.131 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 2.750 | eV | — | ||
| ↳ | 1.318 | eV | — | ||
Dielectric Constant (Relative Permittivity)(εr) | 11.48 | - | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Piezoelectric Modulus(eij) | 0.5880 | C/m² | — | ||
Seebeck Coefficient(S) | -52.25 | 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.
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Energy Above Hull(ΔEhull) | 0.000 | eV/atom | — | ||
Formation Energy(ΔHf) | -0.6111 | 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.