A Peltier device is a type of thermoelectric cooler that uses the Peltier effect to transfer heat from one side of the device to the other. It is commonly used in electronic devices for cooling purposes.
A Peltier device works by passing an electrical current through a circuit made of two different types of semiconductors. This creates a temperature difference between the two sides of the device, with one side becoming hot and the other side becoming cold.
The two most commonly used types of ceramic in a Peltier device are bismuth telluride and lead telluride. These materials have high thermoelectric properties, making them ideal for use in Peltier devices.
In addition to ceramics, Peltier devices also use metal electrodes, such as copper or aluminum, as well as insulating materials, such as silicone or ceramic fibers. These materials help to improve the efficiency and durability of the device.
The type of ceramic used in a Peltier device is determined by several factors, including the desired temperature difference, the amount of current being passed through the device, and the overall size and design of the device. Additionally, the cost and availability of the ceramic may also play a role in the decision.