Article
Chemistry, Physical
Dongli Qin, Feng Pan, Jie Zhou, Zibo Xu, Yuan Deng
Summary: A method based on FET is proposed to optimize the thermoelectric properties of bismuth telluride thin films, allowing control over Seebeck coefficient, electrical conductivity, and carrier type. The experiments showed promising results in achieving high power factor and ZT values in both N-type and P-type. Furthermore, a N-P pair device was constructed by applying different gate voltages on the thin films, and Te-doped bismuth telluride thin films demonstrated adjustable sensitivity in a thin film thermocouple.
Article
Chemistry, Multidisciplinary
Qichao Chen, Jiayi Chen, Xiao Xu, Zhehan Wang, Yamei Ding, Le Xiong, Beibei Zhu, Li Tao
Summary: Vapor-solid growth (VSG) is an effective technique for synthesizing Bi2Se3 materials with promising thermoelectric performance. By regulating the carrier gas flow rate during the VSG process, smooth Bi2Se3 thin films with enhanced TE performance have been achieved. The optimized morphology improves the electrical conductivity and decouples its interplay with the Seebeck coefficient in Bi2Se3.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Inorganic & Nuclear
Fred Robinson, Daniel W. Newbrook, Peter Curran, C. H. (Kees) de Groot, Duncan Hardie, Andrew L. Hector, Ruomeng Huang, Gillian Reid
Summary: This work demonstrates the growth of continuous and stoichiometric SnTe thin films using a single source precursor at lower temperatures, showing p-type semiconductor behavior and advantageous thermoelectric properties. The precursor also enables area selective growth onto patterned substrates, which could be beneficial for micro-thermoelectric generator fabrication.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Farah M. El-Makaty, K. Andre Mkhoyan, Khaled M. Youssef
Summary: This study investigated the effects of graphene's structural integrity on the thermoelectric properties of n type bismuth telluride alloy. The addition of graphene during the last phase of mechanical milling was found to enhance electrical conductivity and Seebeck coefficient. Additionally, an improvement in the figure-of-merit was observed when 0.05 wt% graphene was added in the last 10 mins of milling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Green & Sustainable Science & Technology
Zhuang-Hao Zheng, Xiao-Lei Shi, Dong-Wei Ao, Wei-Di Liu, Meng Li, Liang-Zhi Kou, Yue-Xing Chen, Fu Li, Meng Wei, Guang-Xing Liang, Ping Fan, Gao Qing (Max) Lu, Zhi-Gang Chen
Summary: Flexible thermoelectric materials with high performance and flexibility show potential for converting waste heat into useful electricity. The textured structure design of Bi2Te3 thin films provides high thermoelectric performance and withstands 2,000 bending tests, demonstrating excellent flexibility. A flexible device assembled from 40 pairs of thin films exhibits outstanding output power density under temperature gradient, indicating its potential application in harvesting thermal energy from the environment or human bodies.
NATURE SUSTAINABILITY
(2023)
Article
Materials Science, Multidisciplinary
M. Sinduja, S. Amirthapandian, P. Magudapathy, Anha Masarat, R. Krishnan, S. K. Srivastava, K. Asokan
Summary: This study investigates the effect of defects on the thermoelectric transport properties of Bi2Te3 thin films using 120 keV He+ and Ar+ ion irradiation. The change of carrier type from n-type to p-type was observed with He+ ion irradiation, while p-type conductivity at lower ion fluence and n-type conductivity at higher ion fluences were observed with Ar+ ion irradiation. The highest power factor value was achieved at room temperature with He+ ion fluence of 1 x 10^15 ions/cm^2.
Article
Materials Science, Multidisciplinary
Hagen Bryja, Juergen W. Gerlach, Andrea Prager, Martin Ehrhardt, Bernd Rauschenbach, Andriy Lotnyk
Summary: This study explores memristive switching in vertical device structures based on layered Sb2Te3, with Ag as electrode metal achieving analog programmability, stable multilevel retention, and endurance performance. The research suggests potential applications for thin layered Sb2Te3 in neuromorphic computing and a scalable integration method into the existing Si platform.
Article
Materials Science, Multidisciplinary
Zhi-Lei Wang, Toshiyuki Funada, Tetsuhiko Onda, Zhong-Chun Chen
Summary: Major advances in materials research often require serendipity and chemical intuition. Traditional trial-and-error-based experimental studies are becoming insufficient for designing novel high-performance materials. This work employed machine learning to aid the design of hot-extruded Bi2Te2.85Se0.15 bulk thermoelectric materials based on a small amount of in-house experimental data. The data-driven strategy breaks the rules of thumb in traditional experimental studies and extracts new knowledge to guide the design of high-performance Bi2Te3-based bulk thermoelectric materials.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Analytical
Laura A. Reyes-Verdugo, C. D. Gutierrez-Lazos, J. Santos-Cruz, A. Chavez-Chavez, J. G. Quinones-Galvan
Summary: Bismuth telluride thin films were grown using pulsed laser deposition and a new method that combined Te and Bi plasmas generated from individual Bi and Te targets. The plasma properties were controlled by the mean kinetic ion energy and density, determined by TOF measurements. The films showed a metallic mirror-like appearance with good adhesion. SEM observations revealed smooth surfaces with splashing particulates. Composition analysis indicated a Te-rich composition, but the excess Te was due to splashing. Structural characterization confirmed the rhombohedral structure of Bi2Te3. XPS analysis showed oxidation states corresponding to Bi3+ and Te2-. AFM measurements confirmed the smooth surface with particulates and a film thickness of 400 nm.
Article
Materials Science, Multidisciplinary
K. A. Morgan, I Zeimpekis, Z. Feng, D. Hewak
Summary: The optimization of sputtered bismuth telluride and germanium telluride at 300 degrees C showed enhanced performance of thermoelectric generators on polyimide substrates. Post-annealing, the power factor of BiTe films increased up to 2.2 μW/cmK(2) and GeTe increased by over 5 orders of magnitude to 7.6 μW/cmK(2). A flexible thermoelectric generator was fabricated using alternating annealed BiTe and GeTe strips, achieving 7 nW of output power per pair at a temperature difference of 20 degrees C.
Article
Chemistry, Physical
Shaojun Liang, Hanming Zhu, Xue Ge, Song Yue
Summary: Thin films of Bi0.5Sb1.5Te3/PbTe composites with high orientation were prepared by magnetron co-sputtering, showing improved thermoelectric properties after annealing. The highest power factor reached about 2.06 mW/mK(2) at 480 K, nearly 5 times higher than that of the parent Bi0.5Sb1.5Te3 film.
SURFACES AND INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jose F. Serrano-Claumarchirant, Bejan Hamawandi, Adem B. Ergul, Andres Cantarero, Clara M. Gomez, Pankaj Priyadarshi, Neophytos Neophytou, Muhammet S. Toprak
Summary: This study focuses on the development of large-area thermoelectric films using hybrid materials. By blending TE materials with polymers and using a specific solvent, durable polymer, and additive in the ink formulation, the researchers successfully fabricated large-area homogeneous hybrid TE films with improved conductivity and TE power factor.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Materials Science, Multidisciplinary
Farah M. El-Makaty, Hira Khalil Ahmed, Khaled M. Youssef
Summary: This review paper discusses the impact of nanosized fillers on bismuth telluride nanocomposites for thermoelectric applications, presenting mechanisms for enhancing thermoelectric properties and indicating that doped composites offer better performance. The findings suggest that improvements in thermoelectric properties with nanofillers are significant, especially in doped bismuth telluride composites.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Philipp Lorenz, Gabriel Zieger, Jan Dellith, Heidemarie Schmidt
Summary: We have presented the use of electron-beam co-evaporation as an advantageous alternative method to thermal evaporation for depositing thin Bi1-xSbx films. The thermoelectric properties of the deposited films were compared to those prepared by thermal evaporation, and variations in stoichiometry and annealing steps were studied. The results showed similar thermoelectric properties with higher speed, cleanliness, reproducibility, and lower operating costs for the electron-beam co-evaporated films.
Article
Nanoscience & Nanotechnology
Ling Li, Ningqiang Shi, Xiangqian Jiang, Weiping Chen, Chuncheng Ban, Jiandong Hao
Summary: This study focuses on the synthesis of high-quality bismuth telluride (Bi2Te3) nanowires and boron nitride nanotubes (BNNTs), as well as the preparation of Bi2Te3-BNNTs and Bi2Te3-BCNNTs composite films. The obtained composite films exhibit high electrical conductivity, good flexibility, and thermal stability. They show great potential for application in thermoelectric conversion.
ACS APPLIED MATERIALS & INTERFACES
(2023)
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)