Phonon anharmonicity of thermoelectric material HfTe5 studied by Raman spectroscopy

doi:10.1002/jrs.6090

	Phonon anharmonicity of thermoelectric material HfTe5 studied by Raman spectroscopy
	Xie, Qiyun 2; Xu, Lihuan 2; Hu, Chengxiang 2; Chen, Limin 2; Zheng, Jiajin 2; Wang, Wei 1,3; Yin, Handi 4; Cheng, Guofeng 4; Ai, Xiaoqian 5
刊名	JOURNAL OF RAMAN SPECTROSCOPY
	2021-03-04
页码	7
关键词	anharmonicity HfTe5 phonons temperature dependence of Raman scattering thermoelectric material
ISSN号	0377-0486
DOI	10.1002/jrs.6090
通讯作者	Wang, Wei(iamwwang@njtech.edu.cn) ; Cheng, Guofeng(gfcheng@mail.sic.ac.cn)
英文摘要	The understanding of phonon-phonon anharmonic effect in HfTe5 is essential not only for fundamental scientific interest but also for its potential thermoelectric applications. Here, rectangular ribbon-shaped HfTe5 single crystals have been grown. Raman spectroscopy is further utilized to investigate the phonon anharmonicity of HfTe5 by quantifying the temperature dependence of the phonon mode softening and broadening. We focus on the temperature range from 80 up to 400 K since obvious surface oxidation occurs at higher temperatures. It is found that four phonon anharmonic effects are non-negligible. The phonon lifetime is greatly reduced by the enhancement of phonon scattering, resulting in the low thermal conductivity in HfTe5 single crystals.
资助项目	National Natural Science Foundation of China[11404169] ; National Natural Science Foundation of China[51602159] ; National Natural Science Foundation of China[11704196] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province[SJCX20_0246] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province[SJCX19_0278] ; Scientific Research Foundation of Nanjing University of Posts &Telecommunications[NY217043] ; Scientific Research Foundation of Nanjing University of Posts &Telecommunications[NY218021]
WOS研究方向	Spectroscopy
语种	英语
出版者	WILEY
WOS记录号	WOS:000625312800001
内容类型	期刊论文
源URL	[http://119.78.100.183/handle/2S10ELR8/295620]
专题	中国科学院上海药物研究所
通讯作者	Wang, Wei; Cheng, Guofeng
作者单位	1.Nanjing Tech Univ, Inst Adv Mat, Jiangsu Natl Synerget Innovat Ctr Adv Mat, Nanjing 211816, Peoples R China 2.Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Key Lab Radio Frequency & Micronano Elect Jiangsu, Nanjing, Peoples R China 3.Nanjing Tech Univ, Key Lab Flexible Elect, Jiangsu Natl Synerget Innovat Ctr Adv Mat, Nanjing 211816, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Ceram, Anal & Testing Ctr Inorgan Mat, Shanghai 200050, Peoples R China 5.Jiangsu Second Normal Univ, Coll Phys & Elect Engn, Xuzhou, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Xie, Qiyun,Xu, Lihuan,Hu, Chengxiang,et al. Phonon anharmonicity of thermoelectric material HfTe5 studied by Raman spectroscopy[J]. JOURNAL OF RAMAN SPECTROSCOPY,2021:7.
APA	Xie, Qiyun.,Xu, Lihuan.,Hu, Chengxiang.,Chen, Limin.,Zheng, Jiajin.,...&Ai, Xiaoqian.(2021).Phonon anharmonicity of thermoelectric material HfTe5 studied by Raman spectroscopy.JOURNAL OF RAMAN SPECTROSCOPY,7.
MLA	Xie, Qiyun,et al."Phonon anharmonicity of thermoelectric material HfTe5 studied by Raman spectroscopy".JOURNAL OF RAMAN SPECTROSCOPY (2021):7.