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The effects of Rh doping on the thermoelectric properties of Pt1-xRhxAs2 (x = 0, 0.005, and 0.01) with pyrite structure were studied by conducting measurements of electrical resistivity rho, Seebeck coefficient S, and thermal conductivity…

强关联电子 · 物理学 2013-09-05 Kazutaka Kudo , Seiya Nakano , Tasuku Mizukami , Toshiro Takabatake , Minoru Nohara

We employ density functional theory to investigate the thermoelectric properties of electron and hole doped PtSb$_2$. Our results show that for doping of 0.04 holes per unit cell (1.5$\times10^{20}$ cm$^{-3}$) PtSb$_2$ shows a high Seebeck…

材料科学 · 物理学 2014-02-19 Y. Saeed , N. Singh , Schwingenschlögl

The effects of Ir doping on the thermoelectric properties of Pt1-xIrxSb2 (x = 0, 0.01, 0.03, and 0.1) with pyrite structure were studied. Measurements of electrical resistivity rho, Seebeck coefficient S, and thermal conductivity kappa were…

强关联电子 · 物理学 2012-06-21 Y. Nishikubo , S. Nakano , K. Kudo , M. Nohara

The thermoelectric properties of PbSe have significantly improved in recent years reaching figures of merit ZT 1.6. The transport properties of the hole doped high temperature thermoelectric material PbSe are particularly interesting and…

Heavily doped semiconductors are by far the most studied class of materials for thermoelectric applications in the past several decades. They have Seebeck coefficient values which are 2-3 orders of magnitude higher than metals, making them…

材料科学 · 物理学 2019-09-11 Maxime Markov , Emad Rezaei , Safoura Nayeb Sadeghi , Keivan Esfarjani , Mona Zebarjadi

The origin of the recently discovered large thermopower in hole-doped PtSb$_2$ is theoretically analyzed based on a model constructed from first principles band calculation. It is found that the valence band dispersion has an overall…

材料科学 · 物理学 2012-11-07 Kouta Mori , Hidetomo Usui , Hirofumi Sakakibara , Kazuhiko Kuroki

Using the \emph{ab initio} evolutionary algorithm (implemented in USPEX) and electronic structure calculations we investigate the properties of a new thermoelectric material FeSbAs, which is a material analog of the enigmatic thermoelectric…

材料科学 · 物理学 2018-03-19 Chang-Jong Kang , Gabriel Kotliar

We investigate the thermoelectric propeties of the electron-doped FeAs$_2$ both experimentally and theoretically. Electrons are doped by partially substituting Se for As, which leads to a metallic behavior in the resistivity. A Seebeck…

材料科学 · 物理学 2013-09-06 Hidetomo Usui , Kazuhiko Kuroki , Seiya Nakano , Kazutaka Kudo , Minoru Nohara

By using ab initio electronic structure calculations here we report the three new full Heusler alloys which are possessing very good thermoelectric behavior and expected to be synthesized in the laboratories. These are Fe2 ScP, Fe2 ScAs and…

材料科学 · 物理学 2015-06-22 Sonu Sharma , Sudhir K. Pandey

We report a strategy based on introduction of point defects for improving the thermoelectric properties of FeSb2, a promising candidate for low temperature applications. Introduction of Sb deficiency to the tune of 20% leads to enhancement…

材料科学 · 物理学 2015-05-01 Anup V. Sanchela , Ajay D. Thakur , C. V. Tomy

Efficient thermoelectric materials require a rare and contraindicated combination of materials properties: large electrical conductivity, large Seebeck coefficient, and low thermal conductivity. One strategy to achieve the first two…

材料科学 · 物理学 2019-01-30 Eric B. Isaacs , Chris Wolverton

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

Search of new thermoelectric (TE) materials with high \textit{figure-of-merit} (ZT) is always inspired the researcher in TE field. Here, we present a combined experimental and theoretical study of TE properties of Na$_{0.74}$CoO$_{2}$…

材料科学 · 物理学 2020-08-26 Shamim Sk , Jayashree Pati , R. S. Dhaka , Sudhir K. Pandey

We report an investigation of temperature- and doping-dependent thermoelectric behaviors of topological semimetal Cd3As2. The electrical conductivity, thermal conductivity, Seebeck coefficient, and figure of merit (ZT) are calculated by…

材料科学 · 物理学 2016-11-22 Tong Zhou , Cheng Zhang , Huisheng Zhang , Faxian Xiu , Zhongqin Yang

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

We investigated thermoelectric power $S(T)$ of MgB$_{2-x}$Be$_{x}$ ($x=0$, 0.2, 0.3, 0.4, and 0.6). $S(T)$ decreases systematically with $x$, suggesting that the hole density increases. Our band calculation shows that the increase occurs in…

超导电性 · 物理学 2009-11-07 J. S. Ahn , E. S. Choi , W. Kang , D. J. Singh , E. J. Choi

Efficient thermoelectric materials should present large Seebeck coefficient, high electrical conductivity and low thermal conductivity. An enhanced Seebeck coefficient can be obtained from materials where the Fermi level can be aligned with…

强关联电子 · 物理学 2016-08-03 Pablo Villar Arribi , Pablo García-Fernández , Javier Junquera , Victor Pardo

Poly 3,4-ethylenedioxythiophene (PEDOT) has been attracting attention as a thermoelectric material for room-temperature use due to its flexibility and non-toxicity. However, PEDOT reportedly generates insufficient thermoelectric power for…

材料科学 · 物理学 2024-11-04 Yuki Osada , Ryo Takagi , Hideki Arimatsu , Takuya Fujima

In this work, thermoelectric properties of Al$_{1.2}$Fe$_2$B$_2$ compound were investigated over a temperature range from 300\,K to 773\,K. Al$_{1.2}$Fe$_2$B$_2$ compound was produced by vacuum arc melting of Al, Fe, and B followed by…

材料科学 · 物理学 2022-12-05 Duraisamy Sivaprahasam , Ashutosh Kumar , Babu Jayachandran , Raghavan Gopalan

The potential of bulk black-phosphorus for thermoelectric applications has been experimentally studied. The Seebeck Coefficient (S) has been measured in the temperature range from 300 K to 385 K, finding a value of S = +335 +- 10 uV/K at…

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