Al2Se3 — Properties & Data | MatWorld

Al2Se3

Name: Al2Se3
Brand: MatWorld

semiconductor

· Al2Se3

Al₂Se₃ is a III-VI compound semiconductor formed from aluminum and selenium, belonging to the family of binary metal chalcogenides. While primarily of research and developmental interest rather than a production material, it is investigated for optoelectronic and photovoltaic applications where wide bandgap semiconductors are needed. Engineers and researchers consider this material for specialized roles in UV photodetectors, thin-film solar cells, and high-temperature electronic devices where its wide direct bandgap and thermal stability offer potential advantages over conventional silicon-based systems, though commercial maturity and scalable synthesis remain ongoing challenges.

UV photodetectorsthin-film photovoltaicswide-bandgap semiconductorsresearch optoelectronicshigh-temperature electronicsexperimental solar cells

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	5,115.5	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	3,289.5	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1380	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	1.945	eV	DFT · OptB88vdW
↳	3.204	eV	DFT · TBmBJ
↳	3.100	eV	Measured
Dielectric Constant (Relative Permittivity)(εr)3 entries	11.16	-	DFT · OptB88vdW
↳	9.350	-	DFT · PBE
↳	8.095 range 6.327–9.863median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.512	-	DFT · OptB88vdW
↳	5.106	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.4986	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.000997	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00166	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-111.1	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	292.3	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	2.800	%	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	-0.9262	eV/atom	DFT · OptB88vdW
↳	-1.175	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.

Al2Se3

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