AlCuS2 — Properties & Data | MatWorld

AlCuS2

Name: AlCuS2
Brand: MatWorld

semiconductor

· AlCuS2

AlCuS₂ is a ternary semiconductor compound combining aluminum, copper, and sulfur elements, belonging to the family of mixed-metal chalcogenides. This material is primarily of research interest rather than established in commercial production, with potential applications in optoelectronic devices and photovoltaic systems where its semiconducting properties could enable light absorption or charge transport in layered device architectures. The copper-aluminum-sulfur system is being investigated as an alternative to more conventional semiconductors due to potential cost advantages and tunable electronic properties, though material processing and performance optimization remain active research areas.

photovoltaic researchoptoelectronic devicesthin-film semiconductorssolar cell developmentmaterials researchsemiconductor alloys

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

Units:

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Method

Property	Value	Unit	Conditions
Bulk Modulus(K)2 entries	11,667.2	ksi	DFT
↳	12,023.6	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.3200	-	DFT · OptB88vdW
Shear Modulus(G)2 entries	5,095.4	ksi	DFT
↳	5,389.6	ksi	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.

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1240	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	3.500	eV	Measured
↳	1.896	eV	DFT · OptB88vdW
↳	2.545	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	8.720	-	DFT · OptB88vdW
↳	8.680	-	DFT · PBE
↳	7.901 range 6.979–8.823median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	6.710	-	DFT · OptB88vdW
↳	5.656	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.2567	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.910	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)2 entries	0.5837	C/m²	DFT · OptB88vdW
↳	0.07648	C/m²	DFT · PBE
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	DFT · PBE
Thermoelectric Power Factor(PF)2 entries	0.000766	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00132	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-95.62	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	338.8	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	11.79	%	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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Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000300	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.9432	eV/atom	DFT · OptB88vdW

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.

AlCuS2

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