Bi₂Te₃‐based solid solutions, which have been widely used as thermoelectric (TE) materials for the room temperature TE refrigeration, are also the potential candidates for the power generators with medium and low‐temperature heat sources. Therefore, depending on the applications, Bi₂Te₃‐based materials are expected to exhibit excellent TE properties in different temperature ranges. Manipulating the point defects in Bi₂Te₃‐based materials is an effective and important method to realize this purpose. In this review, we focus on how to optimize the TE properties of Bi₂Te₃‐based TE materials in different temperature ranges by defect engineering. Our calculation results of two‐band model revel that tuning the carrier concentration and band gap, which is easily realized by defects engineering, can obtain better TE properties at different temperatures. Then, the typical paradigms about optimizing the TE properties at different temperatures for n‐type and p‐type Bi₂Te₃‐based ZM ingots and polycrystals are discussed in the perspective of defects engineering. This review can provide the guidance to improve the TE properties of Bi₂Te₃‐based materials at different temperatures by defects engineering.

中文翻译：

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通过缺陷工程调整Bi2 Te3基热电材料的最佳温度范围。

基于Bi ₂ Te ₃的固溶体已被广泛用作室温TE制冷的热电（TE）材料，也是具有中，低温热源的发电机的潜在候选者。因此，根据应用的不同，Bi ₂ Te ₃基材料有望在不同温度范围内表现出出色的TE性能。操纵Bi ₂ Te ₃基材料中的点缺陷是实现此目的的有效且重要的方法。在这篇综述中，我们集中于如何优化Bi ₂ Te ₃的TE特性。通过缺陷工程在不同温度范围内使用基于TE的TE材料。我们的两波段模型揭示了通过缺陷工程很容易实现的对载流子浓度和带隙的调整，可以在不同温度下获得更好的TE特性。然后，从缺陷工程的角度讨论了关于优化n型和p型Bi ₂ Te ₃基ZM铸锭和多晶在不同温度下TE特性的典型范例。这篇综述可以为通过缺陷工程改善Bi ₂ Te ₃基材料在不同温度下的TE性能提供指导。