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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
关键词High-entropy Alloying Co-doping Energy Conversion Gese Thermoelectrics
刊名ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2017-11-06
DOI10.1002/ange.201708134
56期:45页:14113-14118
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]DRUG-DELIVERY ; NANOPARTICLES ; DOXORUBICIN ; VACCINATION ; MEMBRANES ; TOXINS ; SAFE
英文摘要GeSe 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.
语种英语
WOS记录号WOS:000413896400035
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149678
专题中国科学院大连化学物理研究所
作者单位1.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
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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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