Hydrothermal synthesis of SnQ (Q = Te, Se, S) and their thermoelectric properties

Feng, Dan1,2,3; Ge, Zhen-Hua4; Chen, Yue-Xing3; Li, Ju1,2,5,6; He, Jiaqing3

2017-11-10

10.1088/1361-6528/aa8b29

NANOTECHNOLOGY   影响因子和分区

0957-4484

1361-6528

Lead-free IV-VI semiconductors SnQ (Q = Te, Se, S) are deemed as promising thermoelectric (TE) materials. In this work, we designed a hydrothermal route to selectively synthesize single phase SnTe, SnSe and SnS nanopowders. For all three samples, the phase structure were characterized by x-ray diffraction, SnTe particles with octahedron structure and SnSe/SnS particles with plate-like shape were observed by field emission scanning electron microscopy and transmission electron microscopy, the formation mechanism was discussed in detail. Then, SnTe, SnSe and SnS nanopowders were densified by spark plasma sintering for investigating TE properties. It was noticed that SnSe and SnS exhibited remarkably anisotropy in both electrical and thermal properties attributed to the layered crystal structure. The highest ZT values 0.79 at 873 K, 0.21 at 773 K, and 0.13 at 773 K were achieved for SnTe, SnSe and SnS bulk samples, respectively.

SnQ (Q = Te, Se, S) thermoelectrics hydrothermal method

SCI ; EI

英语

通讯

NSF[DMR-1410636] ; NSF[ECCS-1610806]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000413214500007

IOP PUBLISHING LTD

20174504364402

Crystal structure ; Field emission microscopes ; High resolution transmission electron microscopy ; Hydrothermal synthesis ; IV-VI semiconductors ; Layered semiconductors ; Nanostructured materials ; Narrow band gap semiconductors ; Phase structure ; Scanning electron microscopy ; Selenium compounds ; Spark plasma sintering ; Tellurium compounds ; Transmission electron microscopy ; X ray diffraction

Optical Devices and Systems:741.3 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Solid State Physics:933 ; Crystal Lattice:933.1.1

MATERIALS SCIENCE

Web of Science

1.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China
2.Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Xian 710049, Shaanxi, Peoples R China
3.South Univ Sci & Technol China, Shenzhen Key Lab Thermoelect Mat, Dept Phys, Shenzhen 518055, Peoples R China
4.Kunming Univ Sci & Technol, Fac Mat Sci & Technol, Kunming 650093, Yunnan, Peoples R China
5.MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA
6.MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

Feng, Dan,Ge, Zhen-Hua,Chen, Yue-Xing,et al. Hydrothermal synthesis of SnQ (Q = Te, Se, S) and their thermoelectric properties[J]. NANOTECHNOLOGY,2017,28(45).

Feng, Dan,Ge, Zhen-Hua,Chen, Yue-Xing,Li, Ju,&He, Jiaqing.(2017).Hydrothermal synthesis of SnQ (Q = Te, Se, S) and their thermoelectric properties.NANOTECHNOLOGY,28(45).

Feng, Dan,et al."Hydrothermal synthesis of SnQ (Q = Te, Se, S) and their thermoelectric properties".NANOTECHNOLOGY 28.45(2017).