Bismuth telluride is widely used in thermoelectric devices due to its excellent thermoelectric properties at room temperature. It is commonly applied in thermoelectric coolers, which are used for precise temperature control in electronic components, such as lasers and infrared sensors. Additionally, it is utilized in power generation systems to convert waste heat into electricity, particularly in industries where heat recovery is essential. Its efficiency in low-temperature applications makes it a key material in portable cooling systems and small-scale energy harvesting devices.