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Energy band and charge-carrier engineering in skutterudite thermoelectric materials
文献摘要：
The binary CoSb3 skutterudite thermoelectric material has high thermal conductivity due to the covalent bond between Co and Sb,and the thermoelectric figure of merit,ZT,is very low.The thermal conductivity of CoSb3 materials can be sig-nificantly reduced through phonon engineering,such as low-dimensional structure,the introduction of nano second phases,nanointerfaces or nanopores,which greatly improves their ZT values.The phonon engineering can optimize significantly the thermal transport properties of CoSb3-based materials.However,the improvement of the electronic transport proper-ties is not obvious,or even worse.Energy band and charge-carrier engineering can significantly improve the electronic transport properties of CoSb3-based materials while optimizing the thermal transport properties.Therefore,the decoupling of thermal and electronic transport properties of CoSb3-based materials can be realized by energy band and charge-carrier engineering.This review summarizes some methods of optimizing synergistically the electronic and thermal transport properties of CoSb3 materials through the energy band and charge-carrier engineering strategies.Energy band engineer-ing strategies include band convergence or resonant energy levels caused by doping/filling.The charge-carrier engineering strategy includes the optimization of carrier concentration and mobility caused by doping/filling,forming modulation doped structures or introducing nano second phase.These strategies are effective means to improve performance of thermoelectric materials and provide new research ideas of development of high-efficiency thermoelectric materials.
文献关键词：
中图分类号：
[1] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）
[2] 医药、卫生（R） / 基础医学（R3） / 病理学（R36） / 病理过程（R364）
[3] 医药、卫生（R） / 药学（R9） / 药理学（R96） / 实验药理学（R965）
作者姓名：
Zhiyuan Liu;Ting Yang;Yonggui Wang;Ailin Xia;Lianbo Ma
作者机构：
Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials(Ministry of Education),Anhui University of Technology,Maanshan 243002,China;School of Materials Science and Engineering,Anhui University of Technology,Maanshan 243002,China
文献出处：
中国物理B（英文版）
引用格式：
[1]Zhiyuan Liu;Ting Yang;Yonggui Wang;Ailin Xia;Lianbo Ma-.Energy band and charge-carrier engineering in skutterudite thermoelectric materials)[J].中国物理B（英文版）,2022(10):233-244
A类：
skutterudite,nanointerfaces
B类：
Energy,band,charge,carrier,engineering,thermoelectric,materials,binary,CoSb3,high,thermal,conductivity,due,covalent,bond,between,figure,merit,ZT,very,low,reduced,through,phonon,such,dimensional,introduction,second,phases,nanopores,which,greatly,improves,their,values,optimize,significantly,transport,properties,However,improvement,electronic,not,obvious,even,worse,while,optimizing,Therefore,decoupling,realized,by,energy,This,review,summarizes,some,methods,synergistically,strategies,convergence,resonant,levels,caused,doping,filling,strategy,includes,optimization,concentration,mobility,forming,modulation,doped,structures,introducing,These,are,effective,means,performance,provide,new,research,ideas,development,efficiency
AB值：
0.398534
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