AlSb

semiconductor

· AlSb

Aluminum antimonide (AlSb) is a III-V compound semiconductor with a zinc-blende crystal structure, formed from aluminum and antimony. It is primarily used in optoelectronic and high-frequency electronic devices where its direct bandgap and carrier mobility characteristics are advantageous. AlSb serves as a substrate material and active layer in infrared detectors, high-electron-mobility transistors (HEMTs), and millimeter-wave components, with particular value in space and defense applications where radiation hardness and thermal stability matter; it is less common than GaAs or InP in mainstream electronics but remains important for specialized infrared imaging and ultra-high-speed RF circuits.

infrared detectors and focal plane arrayshigh-electron-mobility transistors (HEMTs)millimeter-wave and terahertz devicesspace and radiation-hardened electronicsheterojunction substratesquantum well structures

Compliance & Regulations

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

Units:

Property	Value	Unit	Conditions	Source
Bulk Modulus(K)3 entries	7,136.3	ksi	—
↳	7,136.3	ksi	—
↳	7,314.3	ksi	—
Elastic Compliance Tensor(Sij)	Matrix (redacted)	1/GPa	—
Elastic Anisotropy(AU)	0.3437	-	—
Elastic Stiffness Tensor(Cij)	Matrix (redacted)	ksi	—
Poisson's Ratio(ν)2 entries	0.2496	-	—
↳	0.2600	-	—
Shear Modulus(G)3 entries	4,290	ksi	—
↳	4,290	ksi	—
↳	4,354	ksi	—

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
Thermal Conductivity(k)	44.72	BTU/(hr·ft·°F)	—

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

Property	Value	Unit	Conditions	Source
Density(ρ)	0.1479	lb/in³	—

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

Property	Value	Unit	Conditions	Source
Band Gap(Eg)2 entries	1.670	eV	—
↳	1.322	eV	—
Dielectric Constant (Relative Permittivity)(εr)2 entries	13.64	-	—
↳	12.45 range 11.80–13.10median of 2 measurements	-	—
Magnetic Moment(μB)	0.000	µB	—
Piezoelectric Modulus(eij)2 entries	0.05672	C/m²	—
↳	0.5411	C/m²	—
Piezoelectric Stress Tensor(eij)	Matrix (redacted)	C/m²	—
Seebeck Coefficient(S)	-248.1	µV/K	—

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	—
Formation Energy(ΔHf)2 entries	-0.2601	eV/atom	—
↳	-0.2431	eV/atom	—

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

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.

AlSb — Properties & Data | MatWorld