Article
Engineering, Environmental
Qiang Zhang, Xiaojian Tan, Zhe Guo, Hongxiang Wang, Chenglong Xiong, Na Man, Fanfan Shi, Haoyang Hu, Guo-Qiang Liu, Jun Jiang
Summary: Through Mn-Bi co-doping, the hole concentration in SnTe is effectively reduced, leading to improvements in band structure and enhanced Seebeck coefficient. Additionally, the introduction of various phonon scattering centers by Mn-Bi co-doping suppresses lattice thermal conductivity, resulting in a peak ZT of 1.3 at 850 K and an average ZT of 0.68 (300-850 K) in Sn0.90Mn0.07Bi0.03Te, making it a promising candidate for medium-temperature thermoelectric applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Xinyu Wang, Honghao Yao, Zongwei Zhang, Xiaofang Li, Chen Chen, Li Yin, Kangning Hu, Yirui Yan, Zhou Li, Bo Yu, Feng Cao, Xingjun Liu, Xi Lin, Qian Zhang
Summary: This study demonstrates the effectiveness of high entropy alloying in reducing lattice thermal conductivity and improving Seebeck coefficient of thermoelectric materials. By introducing various elements at the cationic site, both the configurational entropy and phonon scattering are enhanced. Additionally, Ga doping further optimizes carrier concentration and results in a peak ZT value of approximately 1.52 at 823 K for the Ga-0.025(Sn0.25Pb0.25Mn0.25Ge0.25)(0.975)Te alloy.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Qiang Zhang, Ruoyu Wang, Kun Song, Xiaojian Tan, Haoyang Hu, Zhe Guo, Gang Wu, Peng Sun, Guo-Qiang Liu, Jun Jiang
Summary: By improving the low solid solubility limitation of dopants, we have successfully increased the solubility limit of Mn in the SnTe-GeMnTe2 system and found that high doping of Mn can significantly improve the Seebeck coefficient of the material. High-content GeMnTe2 alloying also creates multiscale microstructures, leading to an extremely low lattice thermal conductivity. Based on these effects, the thermoelectric module fabricated using p-type SnTe exhibits high conversion efficiency and output power density under low temperature gradient conditions.
Review
Engineering, Environmental
Jinchang Sun, Yu Zhang, Yuting Fan, Xinfeng Tang, Gangjian Tan
Summary: This review article summarizes recent research progress on PbSe-based thermoelectric materials. It provides a general introduction to the properties of IV-VI semiconductors, discusses the crystal and electronic band structures of PbSe, and explores how dopants regulate its carrier concentrations. The article also elaborates on the impact of electronic band structure engineering and microstructural architecturing on charge and phonon transport properties of PbSe. It concludes by discussing future directions for improving the thermoelectric properties of PbSe and promoting its applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Lei Gao, Jianing Wang, Wenhao Li, Xinyue Yang, Weiyu Song, Shuqi Zheng
Summary: This paper aims to optimize the carrier concentration of GeMnTe2 and reduce the thermal conductivity by Charge Balance Vacancy Engineering. The results show that introducing Sb as a dopant can improve the power factor and thermoelectric properties of GeMnTe2.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Wenxin Tang, Wanyu Qian, Shuanglin Jia, Ke Li, Zhifang Zhou, Jinle Lan, Yuan-Hua Lin, Xiaoping Yang
Summary: BiCuSeO has high Seebeck coefficient, low lattice thermal conductivity, and excellent performance, making it a new oxide thermoelectric material with great application prospects. This review discusses and summarizes the preparation, properties, and thermoelectric properties of BiCuSeO, as well as the recent performance optimization methods at home and abroad. Additionally, future strategies for enhancing the thermoelectric properties and further research are proposed.
MATERIALS TODAY PHYSICS
(2023)
Review
Chemistry, Multidisciplinary
Chaoliang Hu, Kaiyang Xia, Chenguang Fu, Xinbing Zhao, Tiejun Zhu
Summary: Bulk nanostructuring has been a leading strategy for optimizing thermoelectric properties by introducing strong grain boundary scattering, but recent findings have shown that charge carrier transport in some nanostructured materials can be significantly suppressed. Understanding the interaction mechanism of grain boundaries on carrier transport and strategies to enhance thermoelectric performance are crucial. Additionally, using the charge shielding ratio as an indicator to distinguish between different scattering mechanisms is proposed.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Quanxin Yang, Tu Lyu, Bohang Nan, Jian Tie, Guiying Xu
Summary: Lead-free SnTe-based materials, achieved through alloying with Mn and doping with BiBr3, demonstrate significantly improved power factor and quality factor, making them promising alternatives to PbTe.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Yue Li, Zirui Dong, Zhili Li, Yuting Zhang, Kai Guo, Juanjuan Xing, Jiye Zhang, Jun Luo
Summary: CuCrSe2 is a superionic conductor with phonon-liquid electron-crystal transport behaviors, and the presence of the ferromagnetic spinel phase CuCr2Se4 can optimize its thermoelectric properties. The substitution behavior of Ni for Cr controls the content of the spinel phase. The CuCr2Se4 spinel phase acts as carrier reservoirs and reduces lattice thermal conductivity, resulting in improved zT value.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Xiangmei Yan, Sikang Zheng, Zizhen Zhou, Hong Wu, Bin Zhang, Yuling Huang, Xu Lu, Guang Han, Guoyu Wang, Xiaoyuan Zhou
Summary: This study reports significantly improved thermoelectric performance in Sb, Mn-codoped SnTe synthesized by energy-efficient melt spinning, achieving peak zT values that are 110% and 340% higher than those of SnTe. The enhancement in performance is attributed to intensified phonon scattering and valence band convergence, demonstrating the effectiveness of microstructure and band structure engineering in improving thermoelectric properties.
Article
Nanoscience & Nanotechnology
Fang Xu, Dan Zhang, Shikang Gao, Lei Yang, Xingyuan San, Zhiliang Li, Xin Qian, Junyou Yang, Shufang Wang
Summary: The study demonstrates that La doping is an effective method to regulate carrier concentration and improve thermoelectric properties of PbSe. La-doping increases the effective mass and improves the Seebeck coefficient, resulting in a high average power factor and reduced lattice thermal conductivity.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Ji-Sheng Liang, Xiao-Lei Shi, Ying Peng, Wei-Di Liu, Heng-Quan Yang, Cheng-Yan Liu, Jun-Liang Chen, Qi Zhou, Lei Miao, Zhi-Gang Chen
Summary: This study reports outstanding thermoelectric properties of n-type Y-doped Mg3.2Sb1.5Bi0.49Se0.01 materials, including a material coefficient of approximately 1.87 and a high average material coefficient of approximately 1.2, demonstrating great potential for practical applications. First-principles calculations indicate that Y doping can effectively tune carrier density and semiconductor properties, leading to enhanced thermoelectric performance. In addition, lattice distortions and strains caused by the dopant Y suppress the thermal conductivity, further improving the material coefficient.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhi Long, Yajun Wang, Xiaoling Sun, Yitong Li, Zhiwei Zeng, Lin Zhang, Hongyi Chen
Summary: By doping S and Te, the electronic band structure of the second phase is adjusted, resulting in high carrier mobility and power factor in Cu2Se-based composite materials. The dispersed second-phase Cu2Se0.88S0.06Te0.06, dislocations, and nanograins were observed, leading to a substantial reduction in the thermal conductivity. High figure of merit (zT) values of 2.04 (by Dulong-Petit heat capacity) and 2.34 (by Differential Scanning Calorimetry (DSC) measured heat capacity) were achieved at 850 K, which are 65% higher than that of Cu2Se in this work and comparable to the recently reported p-type Cu2Se with outstanding performance.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Shizhen Zhi, Jucai Jia, Qian Zhang, Feng Cao, Xingjun Liu, Jun Mao
Summary: This article discusses the importance and challenges of improving the dimensionless figure of merit (zT) in thermoelectric materials. By conducting band modeling, the characteristics of super-thermoelectric materials, including lower optimal carrier concentration and higher optimal Seebeck coefficient, are predicted. Potential issues in the development of super-thermoelectric materials are also discussed.
MATERIALS TODAY PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Yixuan Chen, Yinying Zhang, Ctirad Uher, Pierre F. P. Poudeu
Summary: This study demonstrated the enhancement of thermoelectric performance at different temperatures by incorporating Cu4TiSe4 inclusions into a Cu2Se matrix using temperature-induced structural transition.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Mark Lundstrom, Supriyo Datta, Xingshu Sun
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2015)
Article
Physics, Applied
James E. Moore, Charles J. Hages, Rakesh Agrawal, Mark S. Lundstrom, Jeffery L. Gray
APPLIED PHYSICS LETTERS
(2016)
Article
Physics, Applied
Jesse Maassen, Mark Lundstrom
JOURNAL OF APPLIED PHYSICS
(2016)
Article
Physics, Applied
Morteza Kayyalha, Jesse Maassen, Mark Lundstrom, Li Shi, Yong P. Chen
JOURNAL OF APPLIED PHYSICS
(2016)
Article
Instruments & Instrumentation
J. S. Bhosale, J. E. Moore, X. Wang, P. Bermel, M. S. Lundstrom
REVIEW OF SCIENTIFIC INSTRUMENTS
(2016)
Article
Physics, Applied
J. Kaiser, T. Feng, J. Maassen, X. Wang, X. Ruan, M. Lundstrom
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Physics, Applied
Xufeng Wang, Vahid Askarpour, Jesse Maassen, Mark Lundstrom
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Nanoscience & Nanotechnology
Jesse Maassen, Vahid Askarpour
Article
Physics, Applied
Evan Witkoske, David Guzman, Yining Feng, Alejandro Strachan, Mark Lundstrom, Na Lu
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Physics, Applied
Xufeng Wang, Mark Lundstrom
JOURNAL OF APPLIED PHYSICS
(2019)
Article
Physics, Applied
Evan Witkoske, Zhen Tong, Yining Feng, Xiulin Ruan, Mark Lundstrom, Na Lu
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Vahid Askarpour, Jesse Maassen
Summary: In this study, density functional theory is used to investigate the electron-phonon scattering characteristics of multiple lead chalcogenides and half-Heuslers. The results show that selecting materials with large-energy zone-edge phonons can potentially suppress intervalley processes and improve conductivity and power factor.