Article
Materials Science, Ceramics
Leilane R. Macario, Andrew Golabek, Holger Kleinke, Edson R. Leite
Summary: This study investigated the thermoelectric properties of Sn1-xSbxO2 ceramic pellets and found that the addition of Sb significantly altered the electrical conductivity and carrier concentration, leading to improved thermoelectric performance with the best composition being Sn0.98Sb0.02O2.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Seokyeong Byeon, Bartlomiej Wiendlocha, Johannes de Boor, Kornelius Nielsch, Hyungyu Jin
Summary: In this study, the authors analyze the effect of Mg deficiency on the thermoelectric properties of the Mgx(Si, Sn) system. It is found that Mg deficiency induces point defects and phase separation, which alter the band structure. The measurements and calculations show that Mg deficiency leads to p-type behavior and a lower carrier concentration. Furthermore, Mg deficiency reduces the thermal conductivity and enhances the p-type thermoelectric performance of Mg silicides.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Qingyu Bai, Xinyue Zhang, Bing Shan, Xuemin Shi, Cheng Sun, Siqi Lin, Wen Li, Yanzhong Pei
Summary: In this study, Ag alloying on the Cu site in TmCuTe2 is found to optimize carrier concentration and reduce lattice thermal conductivity, leading to a significant improvement in thermoelectric figure of merit.
JOURNAL OF MATERIOMICS
(2021)
Article
Materials Science, Multidisciplinary
Wei Cao, Ziyu Wang, Ling Miao, Jing Shi, Rui Xiong
Summary: The pressure-induced thermoelectric properties of Pnma SnSe were investigated using first-principles calculations. The results show that pressure can significantly modify the band structure and lattice thermal conductivity of Pnma SnSe, enhancing its electronic transport properties and thermoelectric performance. These findings are important for the design of new thermoelectric materials.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Huan Zhang, Yaqi Zhang, Pengfei Yu, Li-Min Wang, Gong Li
Summary: Vitrification of Tellurium-based chalcogenid semiconductors is explored to enhance thermoelectric properties by maximizing structural disorder. Ga2Te3-SnTe glasses with low thermal conductivity and high Seebeck coefficient can be successfully prepared by spark plasma sintering technique, providing a new option for high-performance thermoelectric materials development.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Zhuo Liu, Hanlin Cheng, Qiujian Le, Rui Chen, Jianbo Li, Jianyong Ouyang
Summary: Significant improvement in the thermopower and figure of merit of an ionogel is reported through cationic doping. The doped ionogel exhibits higher thermopower, ionic conductivity and thermal conductivity. These ionogels have a high ZT(i) value and show potential for thermoelectric conversion in iTE capacitors.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
T. Parashchuk, N. Sidorenko, L. Ivantsov, A. Sorokin, M. Maksymuk, B. Dzundza, Z. Dashevsky
Summary: A unique thermoelectric solid-state multi-stage cooler was developed for operating temperatures up to 140K, utilizing extrusion technology for thermoelectric legs fabrication. The cooler achieved high cooling capacity and temperature difference, demonstrating potential for practical applications such as refrigeration for mid-infrared sensors up to 150K.
JOURNAL OF POWER SOURCES
(2021)
Article
Physics, Condensed Matter
N. Ghazi, A. Kadhim
Summary: Thermoelectric materials based on ZnO and CuO were prepared and analyzed. X-ray diffraction showed that the samples were polycrystalline and monoclinic in structure. Scanning electron microscopy characterized the nanostructure of the samples. Increasing CuO concentration changed the surface morphologies from layered to a uniform large grain distribution. CuO addition increased the hole concentration and electrical conductivity, while decreasing the Seebeck coefficient. The sample with CuO0.75ZnO0.25 composition showed the highest power factor of 12.92 mu W/mK(2) at around 575 K.
SOLID STATE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
I Kosta, Ch Navone, A. Bianchin, E. Garcia-Lecina, H. Grande, H. Ihou Mouko, J. Azpeitia, I Garcia
Summary: Vanadium oxide nanoparticles were synthesized via wet chemistry route and their impact on the thermoelectrical properties of n-type Mg2Si0.888Sn0.1Sb0.012 materials was studied. It was found that composites containing monoclinic VO2 nanoparticles showed a significant enhancement in ZT value compared to the base material. This indicates the strong potential of vanadium dioxide nanoparticles as additives for producing new thermoelectric materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Yu S. Orlov, S. N. Vereshchagin, L. A. Solovyov, A. A. Borus, M. N. Volochaev, A. V. Nikitin, M. V. Bushinsky, R. A. Lanovsky, G. S. Rymski, V. A. Dudnikov
Summary: This study demonstrates the effect of mechanochemical activation on the microstructure, morphology, and thermoelectric parameters of Sr1-xLnxTiO3-8 (Ln = Nd, Gd, Dy; x = 0.05, 0.075, 0.1) solid solutions, leading to an increase in the power factor. The results show that different sizes of initial particles cause morphological and microstructural differences, significantly affecting the stability and thermoelectric properties of the synthesized samples. Decreasing the initial particle size enhances the thermal stability of the samples, resulting in increased electrical conductivity and power factor with minor variation in the Seebeck coefficient.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Wenkai Le, Wenwen Sheng, Runtao Liu, Minhui Yuan, Wenwei Yang, Jingyi Lv, Li Yin, Chen Chen, Xinyu Wang, Zongwei Zhang, Kejia Liu, Tianchi Wang, Qian Zhang, Jing Shuai
Summary: In this study, Eu0.5Ca0.5Zn2-xMgxSb2 compounds were prepared using ball milling and spark plasma sintering methods. The results show that the thermoelectric performance of Eu0.5Ca0.5Zn2Sb2 was significantly improved through the ball milling and hot-pressing preparation process, and Mg substitution further increased its thermoelectric performance by regulating the thermal conductivity. The obtained high thermoelectric performance in this work provides a reference for improving the properties of other CaAl2Si2 structure Zintl thermoelectric materials.
MATERIALS TODAY ENERGY
(2022)
Article
Optics
Enlin Cai, Jianyi Xu, Yuanying Xia, Linhong Hao, Qingyue Zhang, Shuaiyi Zhang, Lihua Teng, Fei Lou, Maorong Wang, Xia Wang, Aifeng Wang, Tao Li
Summary: The translation indicates that Zirconium pentatelluride (ZrTe5) as a saturable absorber (SA) has shown excellent laser modulation performance in Nd-doped solid-state lasers. The experiment demonstrates the potential of ZrTe5 in ultrafast solid-state lasers.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Physical
Rana Ghannam, Adrien Moll, David Berardan, Loic Coulomb, Antonio Vieira -E-Silva, Benjamin Villeroy, Romain Viennois, Mickael Beaudhuin
Summary: This article reports the effect of nano-structuring and purity on the thermal and thermoelectric properties of alpha-SrSi2. The results show that nanostructured pellets with a grain size of about 200 nm can be obtained using ball milling and spark plasma sintering, which reduces the lattice contribution to the thermal conductivity. The figure of merit ZT is improved to 0.20 around room temperature after nano-structuring. The influence of Sr purity on the thermoelectric properties is also presented.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Thermodynamics
Yang Lu, Cheng Chi, Yufeng Zhang, Yanzheng Du, Weigang Ma, Xing Zhang
Summary: The thermal transport properties of polymer-based i-TE films were investigated at different temperatures using the time-domain thermoreflectance method. It was found that the thermal conductivity of the polymer i-TE films decreases with increasing temperature, showing a similar temperature-dependent trend as crystalline materials. Moreover, the interfacial thermal conductance between the i-TE films and the metal electrode is around 50 MW·m(-2)·K-1, which is influenced by the rotation speed during the spin-coating process. These findings are crucial for optimizing the performance of i-TE devices in practical applications.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Kasey P. Devlin, Shunda Chen, Davide Donadio, Susan M. Kauzlarich
Summary: Solid solutions of Yb(2-x)A(x)CdSb(2) (A = Ca, Sr, Eu; x <= 1) exhibit different crystal structures, with structural transitions occurring with increased Ca content, impacting thermoelectric properties.
INORGANIC CHEMISTRY
(2021)
Article
Physics, Condensed Matter
Shivani Gohri, Jaya Madan, Rahul Pandey
Summary: This study improves the efficiency of SnS-based solar cells by implementing the glancing angle deposition approach and introducing a CZTSSe layer. The findings offer valuable insights for enhancing the design of SnS-based solar cells and making them more efficient.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Mahboubeh Yeganeh, Davoud Vahedi Fakhrabad
Summary: The lattice thermal conductivity of CdO monolayer was investigated, and it was found to be lower than that of bulk CdO due to the lower phonon lifetime and phonon group velocity. As a result, the monolayer exhibits higher thermoelectric efficiency compared to the bulk counterpart.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Shivam Srivastava, Prachi Singh, Anjani K. Pandey, Chandra K. Dixit
Summary: In this research paper, a novel equation of state (EOS) based on finite strain theories is proposed for predicting the thermo elastic properties of various materials. Extensive analysis and comparison with existing models and experimental data demonstrate the validity and effectiveness of the proposed EOS in capturing the unique thermodynamic behavior of nanomaterials, bulk metallic glasses, and superconductors. This research is of great importance in the fields of materials science, nanotechnology, and condensed matter physics.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Subrata Das, Sanjoy Kr Mahatha, Konstantin Glazyrin, R. Ganesan, Suja Elizabeth, Tirthankar Chakraborty
Summary: In this study, we investigated the structural evolution of Tb2Ti2O7 under external pressure and temperature, and confirmed the occurrence of an isostructural phase transition beyond 10 GPa pressure. This transition leads to changes in lattice parameters and mechanical properties, which can be understood in terms of localized rearrangement of atoms.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Hamze Mousavi
Summary: It has been found that undoped graphene sheet has zero states at the Fermi energy level, making it difficult for Cooper pairing to occur in the superconductive state. However, T-graphene, with physical properties similar to graphene, exhibits metallic behavior and has available electron states near the Fermi level. The gap equation for the s-wave superconductive state is derived based on the attractive Hubbard model and the Bogoliubov de Gennes equation for this two-dimensional metallic system. It is found that a nonzero critical temperature, τ, exists for different levels of electron-electron interaction, ǫ. τ has higher values when the system has electronic half band-filling, but decreases when the system does not have half band-filling. However, τ vanishes when ǫ becomes small enough near the band edges.
SOLID STATE COMMUNICATIONS
(2024)