Article
Materials Science, Multidisciplinary
Yu Wang, Xing Yang, Jing Feng, Zhen-Hua Ge
Summary: This study investigates the enhancement of thermoelectric properties of Bi-Sb-Te materials through CsBr doping. The results show that Cs and Br co-doping can significantly improve the electrical conductivity and reduce the thermal conductivity, resulting in enhanced thermoelectric performance.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jing-Wei Li, Weishu Liu, Wei Xu, Hua-Lu Zhuang, Zhijia Han, Feng Jiang, Peng Zhang, Haihua Hu, Hanbin Gao, Yilin Jiang, Bowen Cai, Jun Pei, Bin Su, Qian Li, Kei Hayashi, Hezhang Li, Yuzuru Miyazaki, Xingzhong Cao, Qiang Zheng, Jing-Feng Li
Summary: This study proposes an approach to enhance the thermoelectric performance of Mg-3(Sb,Bi)(2) by mitigating the negative effect of Mg vacancies through Bi deficiency. By tuning the defect combination, the optimized composition achieved a peak zT of 1.82 at 773 K and a high conversion efficiency of 11.3% at an increment T = 473 K.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Ming Tan, Xiao-Lei Shi, Wei-Di Liu, Meng Li, Yaling Wang, Hui Li, Yuan Deng, Zhi-Gang Chen
Summary: By carefully tuning the deposition temperature to enhance the texture and induce Bi/Sb-Te antisite doping in Bi0.5Sb1.5Te3 thin films, a high ZT value of approximately 1.5 was achieved, showing great potential for practical applications.
ADVANCED ENERGY MATERIALS
(2021)
Article
Engineering, Environmental
Rui Zhang, Jun Pei, Zhihang Shan, Wei Zhou, Yin Wu, Zhijia Han, Ying-Hao Zhao, Jing-Feng Li, Zhen-Hua Ge, Bo-Ping Zhang
Summary: GeTe-based alloys have attracted attention for their excellent thermoelectric performance and potential applications. This study successfully suppressed intrinsic Ge vacancies and optimized carrier concentration through temperature gradient cooling technique and Bi-Sb co-doping, resulting in enhanced thermoelectric properties.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Eun-Ha Go, Babu Madavali, Min-Woo Shin, Sung Ho Song, Soon-Jik Hong
Summary: In this research, a combination of magnetic pulse compaction (MPC) and spark plasma sintering (SPS) was used to fabricate complex microstructures and high density twin boundaries in p-type Bi0.5Sb1.5Te3 alloys, leading to improved thermoelectric transport properties. Texture analysis revealed the formation of bimodal microstructural features in MPC+SPS specimens sintered at 350°C and 400°C, attributed to grain adhesion and recrystallization initiation at high temperatures. In addition to twin structures, high-angle grain boundaries were also observed. The MPC+SPS sample at 400°C exhibited a power factor of 3.53 mW/m·K2, reduced thermal conductivity of 1.14 W/mK, and a maximum figure of merit of 1.17.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Yuyou Zhang, Kaikai Pang, Qiang Zhang, Yanan Li, Wenjie Zhou, Xiaojian Tan, Jacques G. Noudem, Gang Wu, Lidong Chen, Haoyang Hu, Peng Sun, Jiehua Wu, Guo-Qiang Liu, Jun Jiang
Summary: This study successfully enhances the thermoelectric performance of Bi2Te3-based alloys by subtly incorporating non-stoichiometric Ag5Te3 and counteractive Se. The addition of Ag5Te3 and Se improves the electrical transport properties and lowers the lattice thermal conductivity. When coupled with other thermoelectric materials, the integrated TE module exhibits significantly improved conversion efficiency and power density, demonstrating great potential for practical applications.
Article
Chemistry, Physical
B. Rabiu, B. Huang, W. A. Shah, X. Luo, Y. Q. Yang
Summary: Mg2.2(Ge0.9Sn0.1)0.94X0.06(X = Ag, Bi, Ni, Sb) ternary solid solutions were synthesized, and the effects of elemental doping on the thermoelectric properties of these compounds were investigated. The results showed that Bi, Sb, and Ni were effective n-type dopants, with Bi being the most efficient in the solid solution of Mg2.2Ge0.9Sn0.1. Additionally, Ag was found to be less efficient in n-type doping. The maximum ZT for the Bi-doped sample was 0.82 at 800 K due to its strong electrical conductivity and moderate Seebeck coefficient.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Yuhong Huang, Hongkuan Yuan, Hong Chen
Summary: The thermoelectric properties of two-dimensional layered ternary compounds AB(2)Te(4) were investigated. These monolayers have wider band gaps, inhibiting bipolar carrier conduction and thermal conductivity. The energy bands of these monolayers exhibit multiple valence band convergence, resulting in high p-type power factors and low lattice thermal conductivity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Yan-Lin Wang, Tsung-Han Chen, Karan Giri, Chun-Hua Chen
Summary: This study successfully demonstrated the application of longitudinally periodic DLC layers in BST-based nanostructures, which effectively improves the Seebeck coefficient and power factor while reducing thermal transport.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Hao Liang, Qing Lou, Yu-Ke Zhu, Jun Guo, Zi-Yuan Wang, Shi-Wei Gu, Wei Yu, Jing Feng, Jiaqing He, Zhen-Hua Ge
Summary: By doping with Cu1.8S, the thermoelectric properties of Bi-Sb-Te-based materials are significantly enhanced, resulting in improved ZT values and hardness.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Bowen Cai, Hua-Lu Zhuang, Jun Pei, Bin Su, Jing-Wei Li, Haihua Hu, Yilin Jiang, Jing-Feng Li
Summary: This study proposes an effective strategy for recycling industrial scraps of Bi2Te3-based thermoelectric materials by adjusting the composition of the scraps to improve thermoelectric performance. An appropriate soaking time is crucial for enhancing electrical transport properties and reducing lattice thermal conductivity during spark plasma sintering process.
Article
Materials Science, Multidisciplinary
Yang Jin, Dongyang Wang, Yingcai Zhu, Lizhong Su, Tao Hong, Ziyuan Wang, Zhen-Hua Ge, Yuting Qiu, Li-Dong Zhao
Summary: High thermoelectric performance is achieved in GeTe-based thermoelectric materials by single doping trivalent dopant M (M=In, Sb, Bi), resulting in a conversion efficiency of -10.3% and power density of -0.6 W cm-2. Doping with Bi decreases deformation potential and optimizes the power factor, leading to the highest ZT value of -1.9. In-doped GeTe exhibits low lattice thermal conductivity at ambient temperature, while Bi-doped GeTe significantly reduces lattice thermal conductivity at high temperature, resulting in the best performance among the single-doped GeTe-based thermoelectric materials.
Article
Materials Science, Multidisciplinary
Bowen Cai, Jun Pei, Jinfeng Dong, Hua-Lu Zhuang, Jinyu Gu, Qian Cao, Haihua Hu, Zihao Lin, Jing-Feng Li
Summary: The study systematically investigated the effects of dispersed SiC nanoparticles of different sizes on the electrical and thermal properties of (Bi,Sb)2Te3-based nanocomposites. It was found that smaller SiC nanoparticles enhanced electrical conductivity, while larger nanoparticles contributed to increased thermal conductivity. Additionally, compositional and processing optimization were crucial for further enhancing the performance of nanocomposites of SiC nanoparticles dispersed in (Bi,Sb)2Te3.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Amir Pakdel, Atta Ullah Khan, Florent Pawula, Sylvie Hebert, Takao Mori
Summary: This study reports the incorporation of ultra-small Bi nanoparticles into Bi0.5Sb1.5Te3/Sb2O3 nanocomposites and their effects on the thermal and electrical transport properties. It was found that the minute Bi nanoprecipitates increase the charge carrier concentration, act as scattering sites, and shift the maximum Seebeck coefficient values to higher temperatures.
ADVANCED MATERIALS INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Minyoung Kim, Sang-il Kim, Sung Wng Kim, Hyun-Sik Kim, Kyu Hyoung Lee
Summary: This study investigates the important parameters affecting the conversion efficiency of thermoelectric materials, finding that the weighted mobility ratio can affect the zT value. It suggests that controlling this parameter is a promising way to enhance the zT value of narrow bandgap thermoelectric materials.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Renshuang Zhai, Yehao Wu, Tie Jun Zhu, Xin-Bing Zhao
CRYSTAL GROWTH & DESIGN
(2018)
Article
Chemistry, Multidisciplinary
Shashwat Anand, Kaiyang Xia, Vinay I. Hegde, Umut Aydemir, Vancho Kocevski, Tiejun Zhu, Chris Wolverton, G. Jeffrey Snyder
ENERGY & ENVIRONMENTAL SCIENCE
(2018)
Article
Physics, Applied
Hong-Jie Pang, Chen-Guang Fu, Hao Yu, Liu-Cheng Chen, Tie-Jun Zhu, Xiao-Jia Chen
JOURNAL OF APPLIED PHYSICS
(2018)
Review
Physics, Applied
Junjie Yu, Kaiyang Xia, Xinbing Zhao, Tiejun Zhu
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2018)
Article
Materials Science, Multidisciplinary
Jia-Zhan Xin, Chen-Guang Fu, Wu-Jun Shi, Guo-Wei Li, Gudrun Auffermann, Yan-Peng Qi, Tie-Jun Zhu, Xin-Bing Zhao, Claudia Felser
Editorial Material
Materials Science, Multidisciplinary
Yan-Zhong Pei, Xiao-Yuan Zhou, Tie-Jun Zhu
Article
Materials Science, Multidisciplinary
Ren-Shuang Zhai, Ye-Hao Wu, Tie-Jun Zhu, Xin-Bing Zhao
Review
Chemistry, Physical
Teng Fang, Xinbing Zhao, Tiejun Zhu
Article
Nanoscience & Nanotechnology
Bo Gong, Yu Li, Fusheng Liu, Jiaxu Zhu, Xiao Wang, Weiqin Ao, Chaohua Zhang, Junqin Li, Heping Xie, Tiejun Zhu
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Nanoscience & Nanotechnology
Jiajun Shen, Zhenyi Wang, Jing Chu, Shengqiang Bai, Xinbing Zhao, Lidong Chen, Tiejun Zhu
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Qinyi Qiu, Yintu Liu, Kaiyang Xia, Teng Fang, Junjie Yu, Xinbing Zhao, Tiejun Zhu
ADVANCED ENERGY MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
J. Shen, L. Fan, C. Hu, T. Zhu, J. Xin, T. Fu, D. Zhao, X. Zhao
MATERIALS TODAY PHYSICS
(2019)
Review
Materials Science, Ceramics
Shen Jia-Jun, Fang Teng, Fu Tie-Zheng, Xin Jia-Zhan, Zhao Xin-Bing, Zhu Tie-Jun
JOURNAL OF INORGANIC MATERIALS
(2019)
Article
Materials Science, Ceramics
Yu Guan-Ting, Xin Jia-Zhan, Zhu Tie-Jun, Zhao Xin-Bin
JOURNAL OF INORGANIC MATERIALS
(2019)
Article
Materials Science, Multidisciplinary
J. Xin, G. Li, G. Auffermann, H. Borrmann, W. Schnelle, J. Gooth, X. Zhao, T. Zhu, C. Felser, C. Fu
MATERIALS TODAY PHYSICS
(2018)