Ca2Si — Properties & Data | MatWorld

Ca2Si

Name: Ca2Si
Brand: MatWorld

semiconductor

· Ca2Si

Ca₂Si is an intermetallic compound and semiconductor material belonging to the silicide family, composed of calcium and silicon in a 2:1 stoichiometric ratio. This material is primarily of research interest in materials science and solid-state physics, where it is investigated for potential applications in thermoelectric devices, optoelectronic components, and advanced semiconductor technologies. Ca₂Si represents an emerging class of alkaline-earth silicides that could offer advantages in niche applications requiring specific band-gap properties or thermal-mechanical characteristics, though industrial adoption remains limited compared to conventional silicon-based semiconductors.

thermoelectric devices (research)semiconductor compound developmentthin-film deposition studieshigh-temperature materials researchcomputational materials discoveryoptoelectronic prototype 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	5,324.4	ksi	DFT
↳	5,744.9	ksi	DFT · OptB88vdW
↳	5,324.4	ksi	DFT · PBE
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	DFT · PBE
Elastic Anisotropy(AU)	0.3229	-	DFT · PBE
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	DFT · PBE
Poisson's Ratio(ν)2 entries	0.2500	-	DFT · OptB88vdW
↳	0.2508	-	DFT · PBE
Shear Modulus(G)3 entries	3,182.6	ksi	DFT
↳	3,424.3	ksi	DFT · OptB88vdW
↳	3,182.6	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)	0.07966	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	1.900	eV	Measured
↳	0.2890	eV	DFT · OptB88vdW
↳	0.5250	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)3 entries	19.83	-	DFT · OptB88vdW
↳	29.42	-	DFT · PBE
↳	18.00 range 14.03–21.96median of 2 measurements	-	DFT · PBEsol
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	17.09	-	DFT · OptB88vdW
↳	13.64	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.06333	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.06333	me	DFT · OptB88vdW · 27°C
Magnetic Moment(μB)	0.000	µB	DFT · OptB88vdW
Piezoelectric Modulus(eij)	0.000	C/m²	DFT · OptB88vdW
Thermoelectric Power Factor(PF)2 entries	0.00155	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00108	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-162.3	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	185.6	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	16.47	%	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)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.5523	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.

Ca2Si

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