What Are The Thermal Properties Of Aluminium Arsenide?

Aluminum arsenide (AlAs) is a semiconductor material with a high thermal conductivity and a low coefficient of thermal expansion. These properties make it useful in electronic and optoelectronic applications where heat dissipation is important.

Specifically, the thermal conductivity of AlAs is approximately 150 W/mK at room temperature. This value is higher than that of many other common semiconductors such as silicon (148 W/mK) and gallium arsenide (46 W/mK). The high thermal conductivity allows AlAs to efficiently transfer heat away from a device, reducing the risk of overheating and improving its overall performance.

In addition, the coefficient of thermal expansion (CTE) of AlAs is relatively low at around 5.6 x 10^-6 K^-1. This means that the material does not expand or contract significantly when exposed to changes in temperature. This property makes AlAs a good candidate for use in devices that experience large temperature variations, as it can help prevent mechanical stress and cracking.

Overall, the thermal properties of aluminum arsenide make it a valuable material in electronic and optoelectronic applications where efficient heat dissipation and thermal stability are critical.