Investigating the thermoelectric performance of n-type SnSe: the synergistic effect of NbCl(5)doping and dislocation engineering

doi:10.1039/d0tc02959a

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Investigating the thermoelectric performance of n-type SnSe: the synergistic effect of NbCl(5)doping and dislocation engineering
	Cai, Jianfeng ; Zhang, Yan ; Yin, Yinong ; Tan, Xiaojian ; Duan, Sichen ; Liu, Guo-Qiang ; Hu, Haoyang ; Xiao, Yukun ; Ge, Zhenhua ; Jiang, Jun
刊名	JOURNAL OF MATERIALS CHEMISTRY C
	2020
卷号	8 期号:38 页码:13244-13252
关键词	POLYCRYSTALLINE SNSE EFFICIENCY POWER ZT
DOI	10.1039/d0tc02959a
英文摘要	Tin selenide (SnSe) is a promising thermoelectric material because of its advantageous electronic structure and low thermal conductivity. In this work, n-type polycrystalline SnSe(0.95)doped with a new dopant NbCl(5)was prepared using vacuum melting and hot-pressing (HP) methods, which resulted in a textured microstructure and anisotropic thermoelectric performance. Several state-of-the-art characterization studiesviaXRD, SEM, and XPS were conducted to analyze the crystal phase, microstructure, and composition of the samples. The TEM observation showed that large amounts of dislocations and nanocrystalline grains existed in our polycrystalline SnSe0.95, which resulted in lower thermal conductivity and better mechanical performance compared to previous reports. The electrical transport measurements along the parallel and perpendicular directions to the HP pressure revealed that the scattering behavior of charge carriers was complex and had a profound effect on the overall thermoelectric properties. Finally, a maximumZTvalue of 1.22 at 790 K was attained in the 0.5% NbCl5-doped SnSe(0.95)sample, which exceeds most of the n-type polycrystalline SnSe systems doped with other halides.
学科主题	Materials Science ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20419]
专题	2020专题
作者单位	1.Jiang, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Ge, ZH (corresponding author), Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China. 3.Yin, YN 4.Jiang, J (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Cai, Jianfeng,Zhang, Yan,Yin, Yinong,et al. Investigating the thermoelectric performance of n-type SnSe: the synergistic effect of NbCl(5)doping and dislocation engineering[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8(38):13244-13252.
APA	Cai, Jianfeng.,Zhang, Yan.,Yin, Yinong.,Tan, Xiaojian.,Duan, Sichen.,...&Jiang, Jun.(2020).Investigating the thermoelectric performance of n-type SnSe: the synergistic effect of NbCl(5)doping and dislocation engineering.JOURNAL OF MATERIALS CHEMISTRY C,8(38),13244-13252.
MLA	Cai, Jianfeng,et al."Investigating the thermoelectric performance of n-type SnSe: the synergistic effect of NbCl(5)doping and dislocation engineering".JOURNAL OF MATERIALS CHEMISTRY C 8.38(2020):13244-13252.