Phonon engineering through crystal chemistry
Phonon engineering through crystal chemistry
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DOI：
10.1039/c1jm11754h
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发表时间：
2011-01-01
影响因子：
--
通讯作者：
Snyder, G. Jeffrey
中科院分区：
文献类型：
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作者：
Toberer, Eric S.;Zevalkink, Alex;Snyder, G. Jeffrey
缓解全球能源危机需要调整材料的导热率。在广泛的能量转换技术中，包括热电和热屏障涂层在广泛的能量转换技术中至关重要。在这里，我们回顾化学趋势，并探索晶体材料中低热导率的起源。最新材料中的一个统一特征是结合结构复杂性，以降低声子速度并增加散射。有了这种理解，可以制定结合这些机制的策略，以设计具有极低导热率的新材料。
Mitigation of the global energy crisis requires tailoring the thermal conductivity of materials. Low thermal conductivity is critical in a broad range of energy conversion technologies, including thermoelectrics and thermal barrier coatings. Here, we review the chemical trends and explore the origins of low thermal conductivity in crystalline materials. A unifying feature in the latest materials is the incorporation of structural complexity to decrease the phonon velocity and increase scattering. With this understanding, strategies for combining these mechanisms can be formulated for designing new materials with exceptionally low thermal conductivity.