CaAl2S4 — Properties & Data | MatWorld

CaAl2S4

Name: CaAl2S4
Brand: MatWorld

metal

· JVASP-22032· CaAl2S4

CaAl2S4 is a ternary chalcogenide compound composed of calcium, aluminum, and sulfur, belonging to the sulfide ceramic family. This material is primarily of research and development interest for optoelectronic and photonic applications, particularly in the ultraviolet to infrared spectrum where sulfide materials offer wide bandgap properties and transparency windows unavailable in conventional oxides. While not yet widely commercialized, CaAl2S4 and related alkaline earth metal aluminides are investigated as potential hosts for rare-earth doping in phosphors, scintillators, and luminescent devices, as well as in semiconductor applications where sulfide-based materials can provide superior performance compared to oxide alternatives.

optoelectronic researchphosphor hostsscintillation detectorswide-bandgap semiconductorsphotonic materials developmentrare-earth luminescence

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Density(ρ)	2.416	kg/m³	DFT · OptB88vdW

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Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)	3.437	eV	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)	5.435	-	DFT · OptB88vdW
Electron Effective Mass(m*e)	0.8633	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.9800	me	DFT · OptB88vdW · 27°C
Thermoelectric Power Factor(PF)2 entries	0.000780	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00103	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-159.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	234.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C

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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.595	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

Regulatory Screening

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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.

CaAl2S4

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