GeSe
semiconductor· GeSe
GeSe is a layered IV–VI semiconductor compound composed of germanium and selenium, belonging to the post-transition metal chalcogenide family. It exists as a 2D material with strong in-plane bonding and weak interlayer van der Waals interactions, making it exfoliable into few-layer or monolayer forms. While primarily a research material rather than a mature commercial product, GeSe shows promise in optoelectronic and energy applications due to its direct bandgap, strong light absorption, and intrinsic anisotropy—properties that distinguish it from more common semiconductors like silicon or gallium arsenide.
photodetectors and image sensorsthermoelectric devicesphotovoltaic cells2D heterostructure engineeringinfrared opticsemerging research applications
Compliance & Regulations
?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Bulk Modulus(K)3 entries | 58.19 | GPa | — | ||
| ↳ | 21.12 | GPa | — | ||
| ↳ | 58.53 | GPa | — | ||
Elastic Compliance Tensor(Sij) | Matrix (redacted) | 1/GPa | — | ||
Elastic Anisotropy(AU) | 1.021 | - | — | ||
Elastic Stiffness Tensor(Cij) | Matrix (redacted) | Pa | — | ||
Exfoliation Energy(Eexf) | 133 | meV/atom | — | ||
Poisson's Ratio(ν)2 entries | 0.1947 | - | — | ||
| ↳ | 0.2000 | - | — | ||
Shear Modulus(G)3 entries | 44.62 | GPa | — | ||
| ↳ | 14.30 | GPa | — | ||
| ↳ | 49.16 | GPa | — |
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 | |
|---|---|---|---|---|---|
Density(ρ) | 5.498 | kg/m³ | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg)2 entries | 1.220 | eV | — | ||
| ↳ | 0.1670 | eV | — | ||
Magnetic Moment(μB) | 0.000 | µB | — | ||
Seebeck Coefficient(S) | -138 | 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) | 0.00910 | eV/atom | — | ||
Formation Energy(ΔHf)2 entries | -0.3576 | eV/atom | — | ||
| ↳ | -0.2510 | eV/atom | — |
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
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.