Ca2SnS4 — Properties & Data | MatWorld

Ca2SnS4

Name: Ca2SnS4
Brand: MatWorld

semiconductor

· Ca2SnS4

Ca2SnS4 is a quaternary semiconductor compound belonging to the thiostannate family, combining alkaline-earth (calcium) and post-transition (tin) elements with sulfur. This material is primarily of research interest for photovoltaic and optoelectronic applications, where it is being investigated as an absorber layer or buffer material in thin-film solar cells and light-emitting devices. Compared to widely-used alternatives like CdTe or CIGS, Ca2SnS4 offers potential advantages including earth-abundant constituent elements and reduced toxicity concerns, though it remains in the development phase with limited commercial deployment; its viability depends on achieving reproducible synthesis and optimizing defect control for competitive device performance.

thin-film photovoltaicssolar cell absorbersoptoelectronic deviceslight-emitting materialsenvironmental-friendly semiconductorsresearch-stage materials

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions
Bulk Modulus(K)	6,634	ksi	DFT · OptB88vdW
Poisson's Ratio(ν)	0.2400	-	DFT · OptB88vdW
Shear Modulus(G)	4,265.6	ksi	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1112	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	2.320	eV	Measured
↳	0.7300	eV	DFT · OptB88vdW
↳	1.736	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)2 entries	15.93	-	DFT · OptB88vdW
↳	9.000	-	DFT · PBE
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	7.820	-	DFT · OptB88vdW
↳	6.035	-	DFT · TBmBJ
Electronic Dielectric Tensor(ε∞)	Matrix (redacted)	-	DFT · PBE
Total Dielectric Tensor(ε)	Matrix (redacted)	-	DFT · PBE
Electron Effective Mass(m*e)	0.4033	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	1.847	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	0.000699	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00200	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-95.73	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	372.1	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	28.65	%	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)	0.02820	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-1.522	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

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.

Ca2SnS4

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