Phonon Engineering for Thermoelectric Enhancement of p-Type Bismuth Telluride by a Hot-Pressing Texture Method

doi:10.1021/acsami.0c07376

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

	Phonon Engineering for Thermoelectric Enhancement of p-Type Bismuth Telluride by a Hot-Pressing Texture Method
	Wang, Hongxiang ; Luo, Guoqiang ; Tan, Chang ; Xiong, Chenglong ; Guo, Zhe ; Yin, Yinong ; Yu, Bo ; Xiao, Yukun ; Hu, Haoyang ; Liu, Guoqiang
刊名	ACS APPLIED MATERIALS & INTERFACES
	2020
卷号	12 期号:28 页码:31612-31618
关键词	THERMAL-CONDUCTIVITY PERFORMANCE FIGURE MERIT BI0.48SB1.52TE3 (BI,SB)(2)TE-3 SKUTTERUDITES DENSITY POWER PBTE
DOI	10.1021/acsami.0c07376
英文摘要	Phonon engineering is a core stratagem to improve the thermoelectric performance, and multi-scale defects are expected to scatter a broad range of phonons and compress the lattice thermal conductivity. Here, we demonstrate obviously enhanced thermoelectric properties in Bi0.48Sb1.52Te3 alloy by a hot-pressing texture method along the axial direction of a zone-melted ingot. It is found that a plastic deformation of grain refinement and rearrangement occurs during the textured pressing process. Although the obtained power factor is slightly decreased, a large amount of grain boundaries emerges in the textured samples and dense dislocations are observed around the boundaries and inside the grains. These additional phonon scattering centers can effectively scatter the low- and mid-frequency phonons, and the corresponding lattice thermal conductivity is significantly reduced to only 50% of that of zone-melted samples. Consequently, the maximum figure of merit (ZT) reaches 1.44 at 330 K and the average ZT (300-380 K) reaches 1.38. This study suggests that the simple hot-pressing texture technique is a promising method to significantly optimize the cooling capacity of Bi0.48Sb1.52Te3-based thermoelectric refrigeration.
学科主题	Science & Technology - Other Topics ; Materials Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20650]
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.Noudem, JG (corresponding author), Normandie Univ, ENSICAEN, UNICAEN, CNRS,CRISMAT, F-14000 Caen, France. 3.Tan, XJ 4.Jiang, J (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
推荐引用方式 GB/T 7714	Wang, Hongxiang,Luo, Guoqiang,Tan, Chang,et al. Phonon Engineering for Thermoelectric Enhancement of p-Type Bismuth Telluride by a Hot-Pressing Texture Method[J]. ACS APPLIED MATERIALS & INTERFACES,2020,12(28):31612-31618.
APA	Wang, Hongxiang.,Luo, Guoqiang.,Tan, Chang.,Xiong, Chenglong.,Guo, Zhe.,...&Jiang, Jun.(2020).Phonon Engineering for Thermoelectric Enhancement of p-Type Bismuth Telluride by a Hot-Pressing Texture Method.ACS APPLIED MATERIALS & INTERFACES,12(28),31612-31618.
MLA	Wang, Hongxiang,et al."Phonon Engineering for Thermoelectric Enhancement of p-Type Bismuth Telluride by a Hot-Pressing Texture Method".ACS APPLIED MATERIALS & INTERFACES 12.28(2020):31612-31618.