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Spontaneously promoted carrier mobility and strengthened phonon scattering in p-type YbZn2Sb2 via a nanocompositing approach

文献类型：期刊论文

作者Zhang, Xiong1,2,4; Zhang, Bin2; Peng, Kun-ling2; Shen, Xing-chen2; Wu, Gui-tai1; Yan, Yan-ci2; Luo, Shi-jun2,4; Lu, Xu2; Wang, Guo-yu3; Gu, Hao-shuang1
刊名NANO ENERGY
出版日期2018
卷号43页码:159-167
关键词Thermoelectric Nanocompositing Carrier density Mobility Phonon scattering
ISSN号2211-2855
DOI10.1016/j.nanoen.2017.11.019
英文摘要Conventional strategies for advancing thermoelectrics via nanocompositing focus on the enhanced phonon scattering induced by nanostructured phase. Here, an effective approach of combining carrier mobility promotion and strengthened phonons scattering to simultaneously improve electrical and thermal transport properties is demonstrated. For the p-type YbZn2Sb2 with InSb nanoinclusions, the Hall mobility is effectively enhanced by InSb in the whole measured temperature, from 56 cm(2) V-1 s(-1) to 162 cm(2) V-1 s(-1) at 300 K. Meanwhile, the carrier density optimization by tuning Yb vacancies leads to 46% improvement in the Seebeck coefficient, overcoming the negative contribution from InSb. Moreover, with the help of interface scattering caused by nanoinclusions, the lattice thermal conductivity is reduced by 45% at 720 K. As a result, the thermoelectric figure of merit ZT is enhanced nearly a factor of three. We believe our method provides a "combined strategy" to enhance thermoelectric performance of YbZn2Sb2 based compounds and should be applicable to other thermoelectric materials.
资助项目National Natural Science Foundation of China[11404044] ; National Natural Science Foundation of China[51472036] ; National Natural Science Foundation of China[11474088] ; Natural Science Foundation of Hubei Province[2016CFA081] ; Natural Science Foundation of Hubei Province[2015CFB498] ; Natural Science Foundation of Hubei Province[2013CFB014] ; Fundamental Research Funds for the Central Universities[106112016CDJZR308808] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH016] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2015JCYJBX0026]
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000419832100019
出版者ELSEVIER SCIENCE BV
源URL[http://172.16.51.4:88/handle/2HOD01W0/88]  
专题机器人与3D打印技术创新中心
通讯作者Gu, Hao-shuang; Zhou, Xiao-yuan
作者单位1.Hubei Univ, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Fac Phys & Elect Sci, Wuhan 430062, Hubei, Peoples R China
2.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
4.Hubei Univ Automot Technol, Sch Sci, Shiyan 442002, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Xiong,Zhang, Bin,Peng, Kun-ling,et al. Spontaneously promoted carrier mobility and strengthened phonon scattering in p-type YbZn2Sb2 via a nanocompositing approach[J]. NANO ENERGY,2018,43:159-167.
APA Zhang, Xiong.,Zhang, Bin.,Peng, Kun-ling.,Shen, Xing-chen.,Wu, Gui-tai.,...&Zhou, Xiao-yuan.(2018).Spontaneously promoted carrier mobility and strengthened phonon scattering in p-type YbZn2Sb2 via a nanocompositing approach.NANO ENERGY,43,159-167.
MLA Zhang, Xiong,et al."Spontaneously promoted carrier mobility and strengthened phonon scattering in p-type YbZn2Sb2 via a nanocompositing approach".NANO ENERGY 43(2018):159-167.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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