SiAs2 — Properties & Data | MatWorld

SiAs2

Name: SiAs2
Brand: MatWorld

semiconductor

· SiAs2

SiAs₂ is a layered semiconductor compound composed of silicon and arsenic, belonging to the class of binary chalcogenide-like materials with potential for two-dimensional applications. This material is primarily of research interest rather than established industrial use, investigated for its electronic and optoelectronic properties in emerging nanoelectronics, particularly as a candidate for thin-film transistors, photodetectors, and layered heterostructure devices. SiAs₂ is notable within the silicon-arsenide family for its layered crystal structure, which makes it amenable to exfoliation into ultrathin sheets for quantum materials research and next-generation semiconductor applications where tunable bandgap and layer-dependent properties are advantageous.

research semiconductorsthin-film transistorsphotodetectors2D materials engineeringnanoelectronics prototypingoptoelectronic devices

Compliance & Regulations

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

Units:

si imperial

Property	Value	Unit	Conditions	Source
Exfoliation Energy(Eexf)	78.56	meV/atom	DFT · OptB88vdW

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

Property	Value	Unit	Conditions	Source
Density(ρ)	4.142	kg/m³	DFT · OptB88vdW

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

Filter by

Method

Carrier

Property	Value	Unit	Conditions
Band Gap(Eg)3 entries	0.8800	eV	Measured
↳	0.8720	eV	DFT · OptB88vdW
↳	1.599	eV	DFT · TBmBJ
Dielectric Constant (Relative Permittivity)(εr)	14.83	-	DFT · OptB88vdW
High-Frequency Dielectric Constant (ε∞)(ε∞)2 entries	14.06	-	DFT · OptB88vdW
↳	10.01	-	DFT · TBmBJ
Electron Effective Mass(m*e)	0.4733	me	DFT · OptB88vdW · 27°C
Hole Effective Mass(m*h)	0.9300	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	0.00255	W/(m·K²)	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	0.00162	W/(m·K²)	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Seebeck Coefficient(S)2 entries	-183.9	μV/K	DFT · OptB88vdW · n-type · 1e20 cm⁻³ · 327°C
↳	222.4	μV/K	DFT · OptB88vdW · p-type · 1e20 cm⁻³ · 327°C
Spectroscopic Limited Maximum Efficiency (SLME)(SLME)	30.77	%	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.

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

Property	Value	Unit	Conditions	Source
Energy Above Hull(ΔEhull)	0.000	eV/atom	DFT · OptB88vdW
Formation Energy(ΔHf)	-0.05220	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

Export Control

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.

SiAs2

Mechanical Properties

Physical Properties

Electrical Properties

Other Properties

Regulatory Screening

Environmental

Export Control