GeSe2 — Properties & Data | MatWorld

GeSe2

Name: GeSe2
Brand: MatWorld

semiconductor

· GeSe2

GeSe2 is a binary chalcogenide semiconductor compound combining germanium and selenium, belonging to the family of IV-VI semiconductors and amorphous chalcogenide glasses. It is primarily investigated for infrared optics, phase-change memory devices, and photonic applications, where its wide transparency window in the infrared spectrum and tunable optical properties make it valuable for imaging systems and optical data storage. As a research-stage material, GeSe2 offers potential advantages over conventional semiconductors in flexible electronics and emerging memory technologies, though industrial adoption remains limited compared to more established chalcogenides like As₂Se₃ or commercial phase-change materials.

infrared optics and windowsphase-change memory devicesphotonic integrated circuitsthermal imaging systemschalcogenide glass opticsresearch semiconductor applications

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	3,483.8	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2500	-	DFT · OptB88vdW
Shear Modulus(G)	2,383	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1675	lb/in³	DFT · OptB88vdW

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

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Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	2.380	eV	Measured
↳	1.236	eV	DFT · OptB88vdW
↳	2.055	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	13.09	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	9.734	-	DFT · OptB88vdW
↳	7.099	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.6267	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.8333	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.4355	C/m²	DFT · OptB88vdW
↳	0.04000	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.00163	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00260	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-207.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	355.5	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	21.78	%	DFT · TBmBJ

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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)2 entries	-0.2271	eV/atom	DFT · OptB88vdW
↳	-0.3904	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

Regulatory Screening

Environmental

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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.

GeSe2

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