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High Thermoelectric Performance of New Rhombohedral Phase of GeSe stabilized through Alloying with AgSbSe2
Huang, Zhiwei1,2; Miller, Samuel A.3; Ge, Binghui4; Yan, Mingtao1,2; Anand, Shashwat3; Wu, Tianmin5; Nan, Pengfei6; Zhu, Yuanhu1; Zhuang, Wei5; Snyder, G. Jeffrey3; Jiang, Peng1; Bao, Xinhe1
KeywordHigh-entropy Alloying Co-doping Energy Conversion Gese Thermoelectrics
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2017-11-06
DOI10.1002/ange.201708134
Volume56Issue:45Pages:14113-14118
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordDRUG-DELIVERY ; NANOPARTICLES ; DOXORUBICIN ; VACCINATION ; MEMBRANES ; TOXINS ; SAFE
AbstractGeSe is a IV-VI semiconductor, like the excellent thermoelectric materials PbTe and SnSe. Orthorhombic GeSe has been predicted theoretically to have good thermoelectric performance but is difficult to dope experimentally. Like PbTe, rhombohedral GeTe has a multivalley band structure, which is ideal for thermoelectrics and also promotes the formation of Ge vacancies to provide enough carriers for electrical transport. Herein, we investigate the thermoelectric properties of GeSe alloyed with AgSbSe2, which stabilizes a new rhombohedral structure with higher symmetry that leads to a multivalley Fermi surface and a dramatic increase in carrier concentration. The zT of GeAg0.2Sb0.2Se1.4 reaches 0.86 at 710 K, which is 18 times higher than that of pristine GeSe and over four times higher than doped orthorhombic GeSe. Our results open a new avenue towards developing novel thermoelectric materials through crystal phase engineering using a strategy of entropy stabilization of high-symmetry alloys.
Language英语
WOS IDWOS:000413896400035
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/149678
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Excellence Nanosci Inst, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Northwestern Univ, Mat Sci & Engn Dept, Evanston, IL 60208 USA
4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
5.Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China
6.Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Huang, Zhiwei,Miller, Samuel A.,Ge, Binghui,et al. High Thermoelectric Performance of New Rhombohedral Phase of GeSe stabilized through Alloying with AgSbSe2[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2017,56(45):14113-14118.
APA Huang, Zhiwei.,Miller, Samuel A..,Ge, Binghui.,Yan, Mingtao.,Anand, Shashwat.,...&Bao, Xinhe.(2017).High Thermoelectric Performance of New Rhombohedral Phase of GeSe stabilized through Alloying with AgSbSe2.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,56(45),14113-14118.
MLA Huang, Zhiwei,et al."High Thermoelectric Performance of New Rhombohedral Phase of GeSe stabilized through Alloying with AgSbSe2".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 56.45(2017):14113-14118.
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