Aluminium Antimonide (AlSb) Semiconductors

Topics Covered

Description
Applications
Chemical Properties
Electrical Properties
Thermal, Mechanical and Optical Properties
Safety Information

Description

Aluminium antimonide is a semiconductor of the group III-V family. It can be alloyed with other III-V semiconductor materials to produce aluminium arsenic antimonide, aluminum gallium antimonide and aluminum indium antimonide. It is highly flammable due to its tendency to form (Sb3-) ion.

Applications

Aluminium antimonide finds applications in the following:

  • Electro-optical devices
  • X-ray and Gamma-ray radiation detection.

Chemical Properties

The chemical properties of aluminium antimonide are provided in the table below:

Chemical Properties
Chemical Formula AlSb
Molecular Weight 148.742
CAS No. 25152-52-7
Group Aluminum – 13
Antimony - 15
Crystal Structure Cubic
Lattice Constant 6.1355 Å

Electrical Properties

The electrical properties of aluminium antimonide are provided in the table below:

Electrical Properties
Dielectric Constant 11
Band Gap 1.6 eV
Electron Mobility 200-400 cm2/Vs
Hole Mobility 550 cm2/Vs

Thermal, Mechanical and Optical Properties

The thermal, mechanical and optical properties of aluminium antimonide are provided in the tables below:

Thermal Properties
Heat of Formation 585 kJ/mol
Thermal Expansion Coefficient 4.20µm/m°C
Thermal Conductivity 60 W/mK
Debye Temperature 19°C
Mechanical Properties
Density 4.218 g/cm3
Melting Point 1057°C
Knoop Microhardness 4000
Optical Properties
Refractive Index 3.20

Safety Information

Safety Information
GHS Hazard Statements H315 - Causes skin irritation
H320 - Causes eye irritation
H331- Toxic if inhaled
Safety Precautions P233 - Keep container tightly closed
P260 - Do not breathe dust/fume/gas/mist/vapors/spray
P281- Use personal protective equipment as required
P309+311 - If exposed or you feel unwell: Call a poison center or doctor/physician.

Comments

  1. Mustafa Kamal Mustafa Kamal Egypt says:

    It is an interesing subject concerning Aluminium antimonide >
    Prof.Dr. Mustafa Kamal , Chairman of Metal Physics Faculty of Science Mansoura University Egypt

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of AZoM.com.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Submit