低成本的p型SnS:一种有前景的中低温热电材料  

Low-cost p-type SnS-based materials:Promising candidates for low-to-mid-temperature thermoelectrics

作　　者：刘姗 刘东锐 邱玉婷 秦炳超 赵立东[1] Shan Liu;Dongrui Liu;Yuting Qiu;Bingchao Qin;Li-Dong Zhao(School of Materials Science and Engineering,Beihang University,Beijing 100191,China;Beihang School,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学材料科学与工程学院,北京100191 [2]北京航空航天大学北航学院,北京100191

出　　处：《科学通报》2025年第6期685-696,共12页Chinese Science Bulletin

基　　金：国家自然科学基金(52450001,22409014);国家重点研发计划(2021YFB3201100);国家杰出青年科学基金(51925101);科学探索奖;北京市杰出青年科学基金(JQ18004);高等学校学科创新引智计划(B17002);博士后创新人才支持计划(BX20230456);中国博士后科学基金面上项目(2024M754057)资助。

摘　　要：随着能源和环境问题的日益严重,热电技术在废热回收和电子制冷领域展现出广阔的应用前景.SnS热电材料凭借丰富的地壳储量、低廉的价格以及轻量化等优点,成为新一代环境友好型热电材料.近年来,宽带隙SnS基晶体热电材料的开发,有望在更宽的温度范围内实现较高的热电能量转换效率.本综述从SnS热电材料的基本物化性质出发,分析了SnS的晶体、电子和声子结构,总结了晶体及多晶材料的合成制备工艺.在此基础上,本文系统介绍了p型SnS基晶体和多晶热电材料的优化策略及研究进展.最后,针对p型SnS基热电材料当前面临的问题,提出总结和展望,以期推动其在温差发电及热电制冷领域的进一步发展和应用.As global energy and environmental challenges become increasingly severe,thermoelectric materials have garnered significant attention for their potential as eco-friendly energy conversion systems.These materials can efficiently convert heat into electrical energy,making them rather important for applications in key technology areas such as aerospace,industrial waste heat recovery,and active cooling.Despite notable advancements in the research of traditional thermoelectric materials,the development of environmentally friendly alternatives with high-ranged performance remains in its nascent stages.In this context,tin sulfide(SnS),a wide bandgap thermoelectric material,emerges as a promising candidate for achieving high-efficiency thermoelectric conversion over a broad temperature range.This review provides a detailed discussion of the fundamental properties of SnS materials,including their crystal,electronic,and phonon structures.A systematic review of the preparation methods for single-crystal growth and polycrystal synthesis is also presented.Building upon this foundation,we comprehensively analyze and summarize the optimization strategies and the latest research advancements related to SnS-based crystals and polycrystals,with a focus on the key representative findings.Additionally,we conduct an in-depth analysis of the current challenges faced by SnS-based thermoelectric materials and devices,as well as offer a perspective on future development directions.This paper begins with a detailed discussion of the crystal structure of the low-temperature Pnma phase of SnS.Emphasis is placed on its unique low-symmetry layered structure,which contributes to its strongly anisotropic properties.These characteristics are analyzed through the phonon structure perspective,revealing their critical role in the material’s intrinsically low thermal conductivity.Furthermore,the electronic band structure of SnS is explored in depth to understand its multiple band transport characteristics.Significant improvements in electrical tra

关 键 词：p型SnS 热电材料 载流子迁移率 有效质量 热电器件 

分 类 号：TB34[一般工业技术—材料科学与工程]