Article
Materials Science, Ceramics
Anatoly I. Romanenko, Galina E. Chebanova, Michael V. Drozhzhin, Ivan N. Katamanin, Vladislav Y. Komarov, M. -K. Han, S. -J. Kim, Tingting Chen, Hongchao Wang
Summary: The study investigates the temperature dependences of electrical properties of Bi2Te3 and doped samples, revealing a phase transition at 120-200K. Both single crystals and polycrystalline samples exhibit quasi-two-dimensional electron transport, with changes in Fermi energy and thermoelectric performance observed.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
A. P. Zavjalov, G. A. Lyubas, M. R. Sharafutdinov, I. A. Tarasov, A. A. Belov, O. O. Shichalin, E. K. Papynov, V. V. Kriventsov, D. Yu. Kosyanov
Summary: This paper presents the results of preparing biphase SrTiO3-TiO2 ceramics as a promising system for n-type thermoelectrics using the features of a two-dimensional electron gas. The dynamics of phase transformations are explored, and it is clarified that phase transformations are not the driving force of sintering. The mutual stabilization of the SrTiO3 and TiO2 phases is demonstrated. The role of the two-dimensional electron gas is found to modulate the properties of bulk phases. Clear signs of size quantization were detected by the X-ray luminescence method.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Rui Ma, Delin Yang, Zengguo Tian, Hongzhang Song, Yingjiu Zhang
Summary: The addition of Bi2Te3 as a second phase in Cu2Se thermoelectric material can greatly influence its microstructure, increase carrier mobility and concentration, and reduce resistivity. However, the total thermal conductivity increases further, which is not desired, and the optimization of the dimensionless thermoelectric figure of merit ZT is not achieved.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Chhatrasal Gayner, Yuriy Natanzon, Yaron Kauffmann, Yaron Amouyal
Summary: This study investigates the correlation between grain size, misorientation, and lattice strain in Bi2Te3 and its effect on its thermoelectric (TE) performance. The results show that the electron mobility increases initially with increasing grain size but decreases at higher grain sizes. It is also found that the lattice strain induced by grain size reduction and point defects plays a crucial role in triggering the topological insulator (TI) contribution to TE transport.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Yen Ngoc Nguyen, Kyung-Tae Kim, Soo-Ho Chung, Injoon Son
Summary: This study investigated the impact of different diffusion barriers (EN and ENEPIG) on the performance of Bi2Te3-based thermoelectric modules, showing that the ENEPIG-coated modules had better wettability and higher output power. Additionally, the ENEPIG-coated modules exhibited lower internal resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Chaohua Zhang, Xingjin Geng, Bin Chen, Junqin Li, Alexander Meledin, Lipeng Hu, Fusheng Liu, Jigui Shi, Joachim Mayer, Matthias Wuttig, Oana Cojocaru-Miredin, Yuan Yu
Summary: The addition of boron to Bi2Te3-based alloys during sintering inhibits grain growth and suppresses the donor-like effect, resulting in improved mechanical and thermoelectric performance. This efficient and cost-effective grain boundary engineering technique can potentially enhance the practical application of these alloys and be applied to other thermoelectric materials.
Article
Engineering, Electrical & Electronic
Ganesh Shridhar Hegde, A. N. Prabhu, Ashok Rao, K. Gurukrishna, U. Deepika Shanubhogue
Summary: Polycomposite samples of (Bi0.98In0.02)(2)Se2.7Te0.3/Bi2Te3 with varying concentrations of Bi2Te3 (5%, 10%, 15%, and 20%) were prepared using the solid-state reaction technique. X-ray diffraction analysis confirmed the hexagonal composite crystal structure of the samples. The samples exhibited typical semiconductor behavior, and the grain boundaries contributed to increased scattering centers and electrical resistivity. The decrease in Seebeck coefficient in samples with higher concentrations of Bi2Te3 can be attributed to the electronegativity differences between In and Te, In and Se, and Bi and Se, Bi and Te.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Review
Chemistry, Physical
Yasaman Saberi, Seyed Abdolkarim Sajjadi
Summary: This paper provides a review of different aspects of doping processes on Bi2Te3 based materials, addressing the challenges and exploring promising solutions. The study concludes that the doping process, annealing, and creation of nanostructured compounds contribute to the efficiency improvement of Bi2Te3 thermoelectric materials. Furthermore, it is suggested that thin film Bi2Te2.7Se0.3 and Bi0.5Sb1.5Te3 materials show the highest ZT values compared to other materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Sumit Bera, P. Behera, R. Venkatesh, Uday Deshpande, P. Garg, V Ganesan
Summary: The magnetotransport and thermoelectric properties of Bi2-xCoxTe3 nanomaterials are influenced by the incorporation of cobalt, resulting in a significant change in the electrical resistivity behavior, possibly due to electron-electron interaction and quantum interference effect.
Article
Energy & Fuels
Haowei Xu, Qiang Zhang, Longbing Yi, Shaolin Huang, Hao Yang, Yanan Li, Zhe Guo, Haoyang Hu, Peng Sun, Xiaojian Tan, Guo-qiang Liu, Kun Song, Jun Jiang
Summary: A study investigates the use of pressure to suppress interfacial resistance in Bi2Te3-based thermoelectric generators (TEGs). Through the establishment of a theoretical model and derivation of explicit expressions, the relationship between maximum output power, conversion efficiency, and interfacial resistivity is determined. Experimental results demonstrate that by applying suitable pressure, interfacial resistivity can be reduced and conversion efficiency can be improved, providing strong support for the fabrication of high-performance TEGs.
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, Physical
Xuedi Zhang, Jin Chen, Han Zhang, Pengfei Zhu, Rong Wang, Fu Li, Bo Li
Summary: Bi2Te3-based materials were prepared by direct ink writing (DIW) 3D printing. The effect of DMF content and Te/Se addition on the microstructure and thermoelectric properties was investigated. Increasing DMF content led to decreased electrical conductivity due to increased porosity and organic remains. However, the volatilization of DMF reduced the fluidity of the slurry, making a 7.0% DMF content most suitable for 3D printing. Additionally, adding Te or Se significantly improved the electrical conductivity of the materials.
JOURNAL OF MATERIOMICS
(2023)
Article
Nuclear Science & Technology
Huanyu Zhao, Kai Liu, Zhiheng Xu, Yunpeng Liu, Xiaobin Tang
Summary: This study investigates the neutron irradiation stability of TE materials in radioisotope thermoelectric generators. The results show that the electrical and thermal transport properties of n-type Bi2Te2.7Se0.3 and p-type Bi0.5Sb1.5Te3 thermoelectric alloys are affected by neutron irradiation, with a positive effect on n-type materials. The effects of different treatments on the output performance of TE devices are also discussed, with the finding that the positive and negative effects of irradiation can cancel each other to some extent.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Seunghyeok Lee, Sung-Jin Jung, Gwang Min Park, Min Young Na, Kwang-Chon Kim, Junpyo Hong, Albert S. S. Lee, Seung-Hyub Baek, Heesuk Kim, Tae Joo Park, Jin-Sang Kim, Seong Keun Kim
Summary: A simple and effective method to synthesize impurity-free nanoporous Bi0.4Sb1.6Te3 is proposed by using nanoporous raw powder of Bi0.4Sb1.6Te3 and selectively dissolving KCl. The abundant nanopores created in Bi0.4Sb1.6Te3 effectively scatter phonons, resulting in a reduction of lattice thermal conductivity and a high figure of merit (ZT) of 1.41 in the temperature range of 333-373 K. This study provides a facile and scalable approach for developing high thermoelectric performance alloys based on Bi2Te3 and can be extended to other thermoelectric materials.
Article
Materials Science, Multidisciplinary
Xianke Wu, Ziyu Wang, Renhui Jiang, Yuan Tian, Yong Liu, Jing Shi, Wenyu Zhao, Rui Xiong
Summary: In this study, Cu0.6Ni0.4 (CN) nanoparticles synthesized via hydrothermal method are introduced into commercial Bi0.4Sb1.6Te3 (BST) materials to suppress thermal conductivity and broaden the application temperature zone. The results show that the weighted mobility is improved and the bipolar thermal conductivity is suppressed for all samples. The thermoelectric performance can be enhanced and the optimal ZT values are achieved at higher temperatures with the presence of CN nanoparticles.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Zhaojun Li, Kunpeng Lin, Hailiang Fang, Hui Yu, Junzhuo Wang, Yimin Miao, Lianjun Wang, Jianlin Li, Wan Jiang
Summary: Lamellar carbon composites of ultra-high bending strength have been successfully fabricated by coating carbon fiber cloths with nano-diamond particles and using spark plasma sintering. The produced composites exhibit the highest specific bending strength among all current high temperature structural materials, suggesting great potential for high-performance carbon materials.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Jiaxin Ma, Jiancheng Wang, Xiaobo Hu, Lianjun Wang, Yuchi Fan, Wan Jiang
Summary: A plate-like magnetic heterostructure with high imaginary permeability and superior impedance matching has been fabricated through nitridation. This novel microwave absorber exhibits significantly improved reflection loss and absorption bandwidth, providing a new path for designing high-performance microwave absorbers based on magnetic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Jiancheng Wang, Beiying Zhou, Yuye Zhao, Jiaxin Ma, Xiaobo Hu, Lianjun Wang, Wan Jiang
Summary: This study successfully prepared a series of alloyed Cd-Zn-S quantum dots-embedded glasses (QDEGs) with controlled emission spectra ranging from green to red. The well-dispersed quantum dots were achieved by cracking the solid-solution precursors during the sintering process. The Cd0.5Zn0.5S QDEG exhibited a high quantum yield of 30%, highlighting its potential for efficient red-emissive applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Ceramics
Pei Zhang, Junzhuo Wang, Lianjun Wang, Jianlin Li, Wan Jiang
Summary: Dense tungsten carbide (WC) bulks with a density of 98.1% were successfully prepared by spark plasmas sintering via self-densification reaction of nanodiamond with tungsten at 1700 degrees C. This method has significant advantages over conventional methods and provides a new insight into the preparation of dense bulks of other metal carbides.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Xiaobo Hu, Yanqiao Xu, Jiancheng Wang, Jiaxin Ma, Lianjun Wang, Wan Jiang
Summary: CsPbX3 perovskite nanocrystals (NCs) have excellent optoelectronic properties and are considered as promising candidates for fluorescence sensors. However, their poor stability hinders their practical applications in aqueous fluorescent detection. In this study, CsPbX3 NCs were in-situ encapsulated into PVDF-HFP/PS polymer nanofibers using electrospinning, and the water stability of the nanofiber membranes was significantly improved by introducing the hydrophobic additive PFDTMS. The fabricated nanofibers exhibited outstanding optical properties, high hydrophobicity, and achieved efficient detection of organic dyes in aqueous solution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Materials Science, Multidisciplinary
Yujie Ren, Xin Wang, Jiaxin Ma, Qi Zheng, Lianjun Wang, Wan Jiang
Summary: In this article, recent advances in using dimension and morphology modulation to adjust the microwave attenuation capacities for MOF-derived carbon composites are comprehensively reviewed. The fundamental design rules and unique advantages for various dimensions of MAMs are discussed, providing general concepts and insight on how to efficiently tune the morphologies. The fundamental dimension-morphology-function relationship is elucidated, and the challenges and perspectives of dimension design and morphology control over MOF-derived MAMs are presented.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Hailiang Fang, Shijia Gu, Shengjie Fan, Beiying Zhou, Ping Huang, Wei Luo, Lianjun Wang, Wan Jiang
Summary: Fine-grained and highly transparent Y2O3 ceramics were successfully prepared using spark plasma sintering, and their microstructure, optical, and mechanical properties were studied. The results demonstrate the importance of the high activity of mesoporous Y2O3 in achieving high-performance ceramics at low sintering temperature.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Optics
Xiaobo Hu, Yanqiao Xu, Jiancheng Wang, Jiaxin Ma, Lianjun Wang, Wan Jiang
Summary: Highly luminescent and stable CsPbClxBr3-x nanocrystals were successfully synthesized by post-treatment with the assistance of the DDAB ligand. The luminescence efficiency of the blue/cyan-emitting nanocrystals was significantly enhanced, and their outstanding fluorescence properties were retained by grafting onto SiO2 nanospheres. The encapsulated composite nanospheres displayed ultrahigh water-stability and were assembled into a white light emitting diode with a high color rendering index. The blue/cyan-emitting films showed excellent temperature-sensitivity and favorable elasticity, indicating their promising application prospect in flexible multifunctional photoelectric devices.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Yanqiao Xu, Xiaobo Hu, Huidong Tang, Qing Hu, Sanhai Wang, Ting Chen, Xiaojun Zhang, Weihui Jiang, Lianjun Wang, Wan Jiang
Summary: In order to address the issue of poor structural stability of lead halide perovskite nanocrystals (NCs), a novel strategy for synthesizing stable CsPbBr3@SiO2 NCs is designed. The method utilizes the hydrolytic polycondensation of (3-aminopropyl)triethoxysilane (APTES) in the presence of ionic liquids (ILs). This approach effectively resolves the problems of fluorescence quenching and undesirable agglomeration, resulting in CsPbBr3@SiO2 NCs with high photoluminescence quantum yield and excellent stability.
Article
Chemistry, Multidisciplinary
Jie Gao, Zhiguo Xia, Qi Ding, Yongping Liu, Peng Yan, Yunfeng Hu, Lianjun Wang, Wei Luo, Yuchi Fan, Wan Jiang
Summary: This article reports a thermally robust all-inorganic color converter that can be used for high-power LED lighting. By utilizing an acid-mediated cold sintering process, oxygen-segregated CaF2 nanoparticles are densified, resulting in a visible transmittance of up to 75% at only 350 degrees C. Using optically isotropic CaF2 as a transparent platform, a phosphor-in-ceramics (PiC) converter based on Y3Al5O12:Ce3+ (YAG: Ce) phosphor is fabricated, achieving a luminous efficacy as high as 190 lm W-1. The cold-sintered CaF2 nanoceramic shows great potential as a general solution for next-generation high-power LED lighting.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jingjie Du, Botao Zhang, Meng Jiang, Qihao Zhang, Keyi Zhang, Yan Liu, Lianjun Wang, Wan Jiang
Summary: The development of flexible thermoelectric devices presents exciting opportunities for wearable applications in various fields. However, scaling up nanotechnology-enabled thermoelectric materials and reducing manufacturing costs remain challenging. This study introduces an inkjet printing method to fabricate high-performance flexible thermoelectric devices. The use of a templated-directed chemical transformation process allows the synthesis of metal chalcogenide nanowires, which are turned into printable inks. The resulting inkjet-printed flexible films and devices show significantly improved performance compared to state-of-the-art inkjet-printed thermoelectrics, indicating the potential of this printing platform for scalable manufacturing of next-generation flexible thermoelectric devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Plant Sciences
Zengzhi Si, Lianjun Wang, Zhixin Ji, Mingming Zhao, Kai Zhang, Yake Qiao
Summary: This study performed a comprehensive genome-wide comparative analysis of the MYB gene family in seven Ipomoea species and identified MYB genes in these species. The identified genes were classified into five types, with the MYB-related or R2R3-MYB type being the most abundant. Analysis of gene structure and protein motifs revealed similarities within the same phylogenetic group. Additionally, cis-regulatory elements related to stress responses were detected in the MYB promoters, and differential gene expression in response to stress treatments was observed.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xin Wang, Pinxi Ou, Qi Zheng, Lianjun Wang, Wan Jiang
Summary: A metal-oxo cluster precursor strategy is proposed to construct magnetic-carbon composites with well-dispersed multiphase magnetic nanoparticles. The Fe/Fe3O4@Fe3C-graphene oxide (GO) and Fe/Fe3O4-carbon nanotubes (CNT) derived from this strategy exhibit high-efficiency microwave absorption at low-/middle-frequency due to the dielectric-magnetic synergy arising from multicomponent magnets and abundant heterointerfaces. This work opens up a novel method for designing high-performance low-/middle-frequency absorbers.
Article
Materials Science, Ceramics
Liangguang Liu, Hui Yu, Junzhuo Wang, Lianjun Wang, Wan Jiang, Jianlin Li, Yixuan Wang
Summary: This study proposes a novel strategy to enhance the toughness and mechanical properties of bioglass/ceramic composites by adding multiwalled carbon nanotubes (MWCNTs). The results show that the glass composite with 1.0 wt% MWCNTs exhibits significantly improved fracture toughness and flexural strength, as well as low electrical resistivity, which would aid skeletal restoration.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Xiaobo Hu, Yanqiao Xu, Jiancheng Wang, Jiaxin Ma, Lianjun Wang, Wan Jiang
Summary: This study proposes a strategy for fabricating highly stable and luminescent all-inorganic CsPbBr3@PVDF-HFP/PS nanofibers. Bright-emitting CsPbBr3 nanocrystals were successfully encapsulated within the polymer nanofibers by optimizing the electrospinning parameters, perovskite precursors, and ligands. Additionally, the nanofibers' hydrophobic surface structure formed through the hydrolysis and condensation of PFDTMS under moist conditions. The CsPbBr3@PVDF-HFP/PS nanofibers demonstrated improved stability due to the double protection of the polymer matrices and hydrophobic PFDTMS oligomers.
ADVANCED FIBER MATERIALS
(2023)
