碲化铋基热电薄膜与器件研究进展

Recent Progress of Bi2Te3-Based Thermoelectric Thin Film Materials and Devices

随着微电子技术的快速进步,电子器件不断朝着高性能、微型化、低功耗、自供电的方向发展。在器件性能和集成度不断提高的同时,小空间的快速散热问题成为制约其发展的关键瓶颈之一。热电薄膜器件是一种以热电薄膜材料为核心的半导体能源转换器件,具有全固态、无噪音、免维护、体积小等优点,在高热流密度电子元器件快速散热和低功耗电子器件自供电等领域具有迫切的应用需求和广阔的市场前景。Bi_(2)Te_(3)基热电材料是目前室温条件下性能最好的热电材料,以Bi_(2)Te_(3)基热电薄膜材料与器件为核心,重点介绍了常用热电薄膜材料的制备与性能优化方法,热电薄膜器件的结构设计、制备工艺以及界面优化手段,并对热电薄膜器件在热电发电和热电制冷领域的应用做了简要介绍。

With the rapid development of microelectronic technology, electronic devices are constantly developing towards high performance, miniaturization, low power consumption and self-power supply. While the device performance and integration level continue to improve, the problem of rapid heat dissipation in small space has become a key bottleneck restricting its development. Thin film thermoelectric device is a kind of semiconductor energy conversion device, which has the advantages of all-solid-state, no noise, maintenance-free and small size. It is suitable for the development trend of electronic devices in the future, and has broad application prospects in the field of self-powered electronic devices with low power consumption and rapid cooling of electronic components with high heat flux density. Bi_(2)Te_(3)-based thermoelectric materials are currently the best thermoelectric materials at room temperature. In this paper, we focus on Bi_(2)Te_(3)-based thermoelectric thin film materials and devices. And the preparation and performance optimization methods of the thin-film thermoelectric materials will be introduced first. Subsequently, the thermoelectric thin film device structure design, fabrication processes and interface optimization approaches will be summarized. At last, the applications of thermoelectric thin film devices in thermoelectric power generation and thermoelectric refrigeration will be reviewed.