Origin of off-centering effect and the influence on heat transport in thermoelectrics
作者机构：School of Materials Science and EngineeringBeihang UniversityBeijing 100191People’s Republic of China
出 版 物：《Materials Futures》 (材料展望（英文）)
年 卷 期：2024年第3卷第1期
页 面：142-149页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：supported by National Natural Science Foundation of China(52250090,52371208,51571007,51772012) the Beijing Natural Science Foundation(JQ18004),111 Project(B17002) L D Z appreciates the National Science Fund for Distinguished Young Scholars(51925101)
主 题：thermoelectric thermal conductivity off-centering behavior acoustic-optical phonon scattering
摘 要：Recently,off-centering behavior has been discovered in a series of thermoelectric *** behavior indicates that the constituent atoms of the lattice displace from their coordination centers,leading to the locally distorted state and local symmetry breaking,while the material still retains its original crystallographic *** effect has been proved to be the root cause of ultralow thermal conductivity in off-centering materials,and is considered as an effective tool to regulate the thermal conductivity and improve the thermoelectric ***,we present a collection of recently discovered off-centering compounds,discuss their electronic origins and local coordination structures,and illuminate the underlying mechanism of the off-centering effect on phonon transport and thermal *** paper presents a comprehensive view of our current understanding to the off-centering effect,and provides a new idea for designing high performance thermoelectrics.
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