Thermal conductivity and enhanced thermoelectric performance of SnTe bilayer

Pandit, Abhiyan; Haleoot, Raad; Hamad, Bothina

doi:10.1007/s10853-021-05926-x

Cited by 14 publications

(5 citation statements)

References 76 publications

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“…Very interesting predictions were obtained from a theoretical analysis of SnTe bilayers in which, due to the bi-layer structure, in the authors' opinion, it was possible to realize the two-dimensionality of the electronic transport of this threedimensional compound [123]. They performed ab initio calculations combined with the Boltzmann transport theory to study the lattice dynamics, structural, electronic, and thermoelectric properties of the 2D SnTe bilayer.…”

Section: Layered Monochalcogenides MX (Mmentioning

confidence: 99%

“…In addition, the authors concluded that their results show that the [CoO 2 ] subsystem is responsible for the transport of charge carriers in Ca 3 Co 4 O 9 , that is, confirms the conclusion about the decisive role of layering in the electron transport of the Ca 3 Co 4 O 9 compound. The difference in the features of magnetic ordering in single crystals [125] and in polycrystals [123] indicates that anisotropic magnetic ordering is averaged in samples. Hira et al [132] report on the electrical, magnetic, and magnetotransport properties of Ca 3−2x Na 2x Co 4−x Mo x O 9 (0 ⩽ x ⩽ 0, 15) samples with Na and Mo dual doping.…”

Section: Layered Oxides Ca 3 Co 4 Omentioning

confidence: 99%

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Review of the thermoelectric properties of layered oxides and chalcogenides

Романенко¹,

Chebanova²,

Chen³

et al. 2021

J. Phys. D: Appl. Phys.

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The current state of investigation on thermoelectric properties of layered chalcogenides and oxides is considered. The relationship between the quasi-two-dimensionality of electronic transport properties and thermoelectric properties is confirmed. A decrease in the dimension of electron transport from three-dimensional to quasi-two-dimensional in materials with a layered structure increases the thermopower with a slight change in electrical conductivity. The bismuth tellurides, bismuth selenides and its alloys are currently one of the outstanding state of the art bulk thermoelectric materials with layered structure. Layered transition metal dichalcogenides MX$_2$ (M is a transition metal, X is a chalcogen) are efficient thermoelectric materials at higher temperatures (500-800 K). In these materials, an increase in thermoelectric properties associated with the two-dimensionalization of electron transport is also observed. Layered monochalcogenides MX (M = Sn, Pb, Ge; X = S, Se, Te) are also a promising class of thermoelectric materials. In SnSe single crystals, $ZT\sim$ 2.6 is obtained at 923 K due to the very low thermal conductivity along the $b$ axis (0.23 W/(m$\cdot$K) at 973 K). Layered chalcogenides CuCrX$_2$ (X - S, Se, Te) containing magnetic Cr atoms are effective thermoelectrics at higher temperatures (up to 800 K) due to the presence of phonon glass – electron crystal state led to a significant decrease in thermal conductivity at high temperatures. Magnetic atoms in CuCrX$_2$ compounds lead to the presence of magnetic phase transitions affecting their thermoelectric properties. Interest in oxide-based thermoelectric materials has significantly increased due to their stability in air and higher temperatures for maximum efficiency. The most promising thermoelectric oxide materials are Ca$_3$Co$_4$O$_9$, Na$_x$CoO$_2$, Bi$_2$Ca$_2$Co$_2$O$_x$, and CaCo$_2$O$_4$ have a layered structure and contain magnetic Co atoms leading to magnetic ordering and influence on thermoelectric properties. The presence of phase transitions affects the thermoelectric parameters of thermoelectrics and the thermoelectric figure of merit $ZT$.

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Section: Layered Monochalcogenides MX (Mmentioning

confidence: 99%

Section: Layered Oxides Ca 3 Co 4 Omentioning

confidence: 99%

Review of the thermoelectric properties of layered oxides and chalcogenides

Романенко¹,

Chebanova²,

Chen³

et al. 2021

J. Phys. D: Appl. Phys.

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“…All four of the materials have very low lattice thermal conductivity. We also found the different lattice thermal conductivity along the armchair and zigzag directions [136] .…”

Section: V-v族化合物mentioning

confidence: 57%

“…空间分辨的dI/dV spectra(右图) [123] ; (f) 横向SnS存储器件(通道长度L = 4 µm, 从-5.5 V循环到5.5 V)在不同栅极电压V g 下的I-V磁滞曲线 [129] ; (g) 采用迭代法(实线)和单模弛豫时间近似法(single-mode relaxation time approximation,SMRTA)(虚线)计算了Ⅳ-Ⅵ族单层膜的晶格导热系数随温度的变化. 四种材料的晶格导热系数都很低, 同时沿扶手椅和之字形方向的晶格导热系数不同 [136] ing. Spatially resolved dI/dV spectra (right panels) obtained along the two arrows in the image on the left [123] .…”

Section: V-v族化合物unclassified

Research progress of puckered honeycomb monolayers

Meng¹,

Zhao²,

Li³

2021

Acta Phys. Sin.

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Graphene, as the representative of two-dimensional materials, has varous novel physical properties and potential applications. The intrinsic zero band gap of graphene limits its application in semiconductor devices, and thus the search for new semiconducting alternative materials has become a current research hotspot. Phosphorene is the monolayer of black phosphorus and has a puckered honeycomb structure. Its advanced properties, such as adjustable direct band gap, high carrier mobility and in-plane anisotropy and so on, have recently aroused great research interest, thus opening up the research field of puckered honeycomb monolayers in group V elements. In this article, we first focus on the structure, synthesis and physical properties of five single-element two-dimensional materials (nitrogen, phosphorus, arsenic, antimony and bismuth) each with puckered honeycomb structure. Second, some binary two-dimensional materials with puckered honeycomb structure are discussed, including IV-VI and V-V compounds. These materials have their own unique crystal symmetry, and the properties can be controlled by changing their structures and dimensions. Finally, we also make a summary on some current challenges that need to be solved, and the possible future applications of these two-dimensional materials are also presented.

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“…In this work we study the finite-temperature anharmonic phonons and the associated thermodynamic properties along with the LTC of the two-dimensional (2D) zirconium disulphide (ZrS2) monolayer (ML), which is a typical 2D transition metal dichalcogenide (TMDC) that has been successfully synthesized [32][33][34][35]. Lowering the dimensionality and nano-structuring are reported to play major roles in suppressing the LTC that leads to an enhancement in the figure of merit (ZT) [36][37][38][39][40]. By using the conventional Boltzmann transport equation (BTE) within the relaxation time approximation (RTA), the LTC was predicted to be significantly low for the ZrS2 ML as compared to other similar 2D compounds [21], which is an important feature in the TE efficiency enhancement and device applications.…”

Section: Introductionmentioning

confidence: 99%

The effect of finite-temperature and anharmonic lattice dynamics on the thermal conductivity of ZrS₂ monolayer: self-consistent phonon calculations

Pandit

Hamad

2021

J. Phys.: Condens. Matter

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Two-dimensional (2D) ZrS2 monolayer (ML) has emerged as a promising candidate for thermoelectric (TE) device applications due to its high TE figure of merit, which is mainly contributed by its inherently low lattice thermal conductivity. However, the inadequate understanding of the lattice anharmonicity and its effect on the phonon dispersion and lattice thermal conductivity can be misleading in revealing the actual significance of ZrS2 ML in thermoelectrics. Here we investigated the temperature-dependent phonon dispersions and corresponding thermodynamic parameters along with the lattice thermal conductivity of ZrS2 ML by including the lattice anharmonicity based on the nonperturbative self-consistent phonon (SCP) theory, which was recently implemented and well tested with the experimental results. The higherorder (quartic) force constants were extracted by using an efficient compressive sensing lattice dynamics technique, which estimates the necessary data based on the emerging machine learning program. The phonon frequency of low-energy optical modes is enhanced upon including the quartic anharmonicity. The lattice thermal conductivity is found to be increased (by 21% at 300 K) within the SCP approach, which is due to the relatively low value of phonon linewidth contributed by the anharmonic frequency renormalization. The low energy phonons (below 160 cm -1 ) of ZrS2 ML are found to have major contributions to the lattice thermal conductivity.

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Thermal conductivity and enhanced thermoelectric performance of SnTe bilayer

Cited by 14 publications

References 76 publications

Review of the thermoelectric properties of layered oxides and chalcogenides

Review of the thermoelectric properties of layered oxides and chalcogenides

Research progress of puckered honeycomb monolayers

The effect of finite-temperature and anharmonic lattice dynamics on the thermal conductivity of ZrS₂ monolayer: self-consistent phonon calculations

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Thermal conductivity and enhanced thermoelectric performance of SnTe bilayer

Cited by 14 publications

References 76 publications

Review of the thermoelectric properties of layered oxides and chalcogenides

Review of the thermoelectric properties of layered oxides and chalcogenides

Research progress of puckered honeycomb monolayers

The effect of finite-temperature and anharmonic lattice dynamics on the thermal conductivity of ZrS2 monolayer: self-consistent phonon calculations

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Product

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The effect of finite-temperature and anharmonic lattice dynamics on the thermal conductivity of ZrS₂ monolayer: self-consistent phonon calculations