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首页> 外文期刊>Annual Review of Materials Science >S KUTTERUDITES A Phonon-Glass-Electron Crystal Approach to Advanced Thermoelectric Energy Conversion Applications
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S KUTTERUDITES A Phonon-Glass-Electron Crystal Approach to Advanced Thermoelectric Energy Conversion Applications

机译：S KUTTERUDITES先进的热电能量转换应用中的声子-玻璃-电子晶体方法

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摘要

Recently there has been a resurgence of research efforts related to the investi- gation of new and novel materials for small-scale thermoelectric refrigeration and power generation applications. These materials need to couple and opti- mize a variety of properties in order to exhibit the necessary figure of merit, i.e. the numerical expression that is commonly used to compare one poten- tial thermoelectric material with another. The figure of merit is related to the coefficient of performance or efficiency of a particular device made from a mate- rial. The best thermoelectric material should possess thermal properties similar to that of a glass and electrical properties similar to that of a perfect single- crystal material, i.e. a poor thermal conductor and a good electrical conduc- tor. Skutterudites are materials that appear to have the potential to fulfill such criteria. These materials exhibit many types of interesting properties. For exam- ple, skutterudites are members of a family of compounds we call open structure or cage-like, materials. When atoms are placed into the interstitial voids or cages of these materials, the lattice thermal conductivity can be substantially reduced compared with that unfilled skutterudites.
机译：最近，与用于小型热电制冷和发电应用的新型材料研究有关的研究工作重新兴起。为了表现出必要的品质因数，即通常用于比较一种潜在的热电材料与另一种热电材料的数值表达式，这些材料需要结合并优化各种性能。品质因数与由材料制成的特定设备的性能或效率系数有关。最好的热电材料应具有与玻璃相似的热性能，以及与理想的单晶材料相似的电性能，即导热性差且导电性好。方钴矿是看起来有可能满足这些标准的材料。这些材料表现出多种有趣的特性。例如，方钴矿是一类化合物的成员，我们称其为开放结构或笼状材料。当将原子放入这些材料的空隙或笼中时，与未填充的方钴矿相比，晶格热导率会大大降低。

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