c-plane sapphire
The coefficient of thermal expansion of sapphire crystals varies in different crystal planes. Sapphire has good dimensional stability at high temperatures.
The lower coefficient of thermal expansion means that at high temperatures, the sapphire material has less dimensional change, which is especially important for application scenarios that require high precision and stability.
c-plane sapphire
These excellent thermal properties make C-face sapphire an ideal material for the fabrication of high-temperature electronics, lasers and LED devices.
Sapphire has a relatively high thermal conductivity of approximately 42 W/m-K at room temperature. sapphire’s high thermal conductivity contributes to efficient heat transfer and heat dissipation in high temperature environments.
At room temperature, the thermal conductivity of sapphire is about 42 W/m-K, which makes it one of the materials with excellent heat dissipation properties.
Its ability to dissipate heat efficiently at high temperatures reduces thermal stress buildup, which is critical for thermal management of high-power lasers and LED devices.
