GeSe — Properties & Data | MatWorld

GeSe

Name: GeSe
Brand: MatWorld

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

Units:

si imperial

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)3 entries	3,062.7	ksi	DFT
↳	8,489.1	ksi	DFT · OptB88vdW
↳	8,440	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	1.021	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Exfoliation Energy(Eexf)	133	meV/atom	DFT · OptB88vdW
Poisson's Ratio(ν)2 entries	0.2000	-	DFT · OptB88vdW
↳	0.1947	-	DFT · PBE
Shear Modulus(G)3 entries	2,074.3	ksi	DFT
↳	7,130.1	ksi	DFT · OptB88vdW
↳	6,471.6	ksi	DFT · PBE

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.

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Property	Value	Unit	Conditions	Source
Density(ρ)	0.1986	lb/in³	DFT · OptB88vdW

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Method

Property	Value	Unit	Conditions
Band Gap(Eg)2 entries	1.220	eV	Measured
↳	0.8670	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	15.70	-	DFT · OptB88vdW
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW

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.

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Method

Property	Value	Unit	Conditions
Energy Above Hull(ΔEhull)	0.00910	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.2510	eV/atom	DFT · OptB88vdW
↳	-0.3576	eV/atom	Measured

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

Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data

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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.

GeSe

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