Apr 15 2013
Aluminium antimonide is a semiconductor of the group III-V family. It can be alloyed with other III-V semiconductor materials to produce aluminum arsenic antimonide, aluminum gallium antimonide, and aluminum indium antimonide. It is highly flammable due to its tendency to form (Sb3-) ion.
Applications
Aluminum antimonide finds applications in the following:
- Electro-optical devices
- X-ray and Gamma-ray radiation detection.
Chemical Properties
The chemical properties of aluminum 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 aluminum 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 aluminum 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. |