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The anisotropic thermoelectric transport properties of bulk silicon strained in [111]-direction were studied by detailed first-principles calculations focussing on a possible enhancement of the power factor. Electron as well as hole doping…

材料科学 · 物理学 2012-06-28 N. F. Hinsche , I. Mertig , P. Zahn

Boron-doped polycrystalline silicon-germanium (SiGe) thin films are grown by low-pressure chemical vapor deposition (LPCVD) and their thermoelectric properties are characterized from 120 K to 300 K for the potential applications in…

材料科学 · 物理学 2015-06-23 Jianbiao Lu , Ruiqiang Guo , Weijing Dai , Baoling Huang

We report the thermoelectric (TE) properties of Na$_{0.74}$Co$_{0.95}$Nb$_{0.05}$O$_{2}$ in the temperature range $300-1200$ K, as a potential candidate for p-type thermoelectric material. The experimental values of Seebeck coefficient (S)…

强关联电子 · 物理学 2019-11-18 Arzena Khatun , Shamim Sk , Jayashree Pati , R. S. Dhaka , Sudhir K. Pandey

Thermoelectric materials operating at cryogenic temperatures are in high demand for efficient cooling and power generation in applications ranging from superconductors to quantum computing. The narrow band-gap semiconductor FeSb2, known for…

材料科学 · 物理学 2023-11-02 Deepak Gujjar , Sunidhi Gujjar , V. K. Malik , Hem C. Kandpal

The quest for thermoelectric materials with high figures of merit is an ongoing and significant area of research. In this study, we investigate the thermoelectric properties of the CoTiSi half-Heusler alloy using density functional theory…

材料科学 · 物理学 2025-09-10 A. Shukla , Sadhana Matth , Raghavendra Pal , S. S. A. Warsi , Himanshu Pandey

Nano-structuring is an extremely promising path to high performance thermoelectrics. Favorable improvements in thermal conductivity are attainable in many material systems, and theoretical work points to large improvements in electronic…

In this work, we try to understand the experimental thermoelectric (TE) properties of a ZrNiSn sample with DFT and semiclassical transport calculations using SCAN functional. SCAN and mBJ provide the same band gap $E_{g}$ of $\sim$0.54 eV.…

强关联电子 · 物理学 2020-06-24 Shivprasad S. Shastri , Sudhir K. Pandey

We use first-principles electronic structure methods to calculate the electronic thermoelectric properties (i.e. due to electronic transport only) of single-crystalline bulk $n$-type silicon-germanium alloys vs Ge composition, temperature,…

材料科学 · 物理学 2025-02-03 F. Murphy-Armando

The efficiency of energy conversion in thermoelectric generators (TEGs) is directly proportional to electrical conductivity and Seebeck coefficient while inversely to thermal conductivity. The challenge is to optimize these interdependent…

Synchrotron-based angle-resolved photoemission spectroscopy is used to determine the electronic structure of layered SnSe, which was recently turned out to be a potential thermoelectric material. We observe that the top of the valence band…

On the basis of density functional theory (DFT) calculations thermoelectric properties are derived for Sb-doped skutterudites MPt$_4$Ge$_{12-x}$Sb$_x$ with M=Ba,La,Th. It is predicted that the originally very small absolute values of…

材料科学 · 物理学 2012-07-06 M. X. Chen , R. Podloucky , S. Humer , E. Bauer , P. Rogl

We investigate the thermoelectric properties of ${\beta}$-FeSi$_{\text2}$ using first principles electronic structure and Boltzmann transport calculations. We report a high thermopower for both \textit{p}- and \textit{n}-type…

材料科学 · 物理学 2015-06-17 Tribhuwan Pandey , David J. Singh , David Parker , Abhishek K. Singh

Using the density functional theory (DFT) in combination with Boltzmann transport theory, the influence of Mg concentrations (x) doping on the thermoelectric properties of Hg1-xMgxSe ternary alloys was systematically investigated. The…

材料科学 · 物理学 2023-03-28 Y. Selmani , H. Labrim , A. Jabar , L. Bahmad

In 2016, bulk tellurium was experimentally observed as a remarkable thermoelectric material. Recently, two-dimensional (2D) tellurium, called tellurene, has been synthesized and has exhibited unexpected electronic properties compared with…

计算物理 · 物理学 2019-06-05 Zhibin Gao , Gang Liu , Jie Ren

Thermoelectric materials create an electric potential when subject to a temperature gradient and vice versa hence they can be used to harvest waste heat into electricity and in thermal management applications. However, finding highly…

材料科学 · 物理学 2022-05-10 Enamul Haque , Claudio Cazorla , M. Anwar Hossain

We present results of electronic band structure, Fermi surface and electron transport properties calculations in orthorhombic $n$- and $p$-type SnSe, applying Korringa-Kohn-Rostoker method and Boltzmann transport approach. The analysis…

材料科学 · 物理学 2015-05-11 K. Kutorasinski , B. Wiendlocha , S. Kaprzyk , J. Tobola

Two-dimensional (2D) materials may have potential applications in thermoelectric devices. In this work, we systematically investigate the thermoelectric properties of orthorhombic group IV-VI monolayers $\mathrm{AB}$ (A=Ge and Sn; B=S and…

材料科学 · 物理学 2017-02-01 San-Dong Guo

The potential of Fe2TiSn full-Heusler compounds for thermoelectric applications has been suggested theoretically, but not yet grounded experimentally, due to the difficulty of obtaining reproducible, homogeneous, phase pure and defect free…

Lead chalcogenides are the promising thermoelectric (TE) materials having narrow band gap. The present work investigates the TE behaviour of PbSe in the temperature range 300-500 K. The transport properties of the sample have been studied…

Half-Heusler phases are among the most extensively studied thermoelectic materials. Bipolar thermal conductivity analysis performed for their sub-group based on rare-earth (R) metals, RNiSb, indicated on high mobility ratio in favor of…

材料科学 · 物理学 2024-08-09 K. M. Ciesielski , D. Kaczorowski