High performance in room temperature and thermoelectric properties of PbSe single crystal prepared by Pb-flux method

Sun, Luqi; Shai, Xuxia; Chen, Zhong; Tang, Yu; Liu, Wenting; Shen, Lanxian; Ge, Wen; Deng, Shukang

doi:10.1016/j.physb.2019.411797

Cited by 3 publications

(4 citation statements)

References 40 publications

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“…The completed lattice stripes of PbSe(NaCl) 3.0 display interplanar spacings of 0.306 nm in the particle, which matched well with the (200) planes of PbSe. Figure 2 d exhibits the image of SAED acquired along the [002] zone axis of PbSe(NaCl) 3.0 , further confirming the high crystal quality of the specimen synthesized via the NaCl salt-assisted approach [ 34 ].…”

Section: Resultsmentioning

confidence: 64%

“…In Figure 3 b, the XPS spectrum of Se 3d is presented, revealing the chemical binding energy peak of Se 3d 5/2 at 53.4 eV and the chemical binding energy peak of Se 3d 3/2 at 54.2 eV. These peaks correspond to the characteristics of Se −2 , indicating that the Se element is −2 valence [ 34 ]. In Figure 3 c, the XPS spectrum of Na 1s is displayed, and the chemical binding energy peak of Na 1s is observed at 1071.46 eV, suggesting that Na has a valence state of +1, thus promising the increase in hole concentration.…”

Section: Resultsmentioning

confidence: 99%

“…The main reason for this is the increase in the intensity of phonons vibration with the rising temperature, leading to more frequent scattering and a decrease in phonon thermal conductivity, thus resulting in a decrease in the total thermal conductivity. Additionally, after 500 K, the thermal conductivity decreases more slowly with temperature due to the intensification of lattice vibration and the appearance of a bipolar effect [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

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Preparation of Heavily Doped P-Type PbSe with High Thermoelectric Performance by the NaCl Salt-Assisted Approach

Shai

Ding

et al. 2023

Molecules

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Thermoelectric (TE) technology, which can convert scrap heat into electricity, has attracted considerable attention. However, broader applications of TE are hindered by lacking high-performance thermoelectric materials, which can be effectively progressed by regulating the carrier concentration. In this work, a series of PbSe(NaCl)x (x = 3, 3.5, 4, 4.5) samples were synthesized through the NaCl salt-assisted approach with Na+ and Cl− doped into their lattice. Both theoretical and experimental results demonstrate that manipulating the carrier concentration by adjusting the content of NaCl is conducive to upgrading the electrical transport properties of the materials. The carrier concentration elevated from 2.71 × 1019 cm−3 to 4.16 × 1019 cm−3, and the materials demonstrated a maximum power factor of 2.9 × 10−3 W m−1 K−2. Combined with an ultralow lattice thermal conductivity of 0.7 W m−1 K−1, a high thermoelectric figure of merit (ZT) with 1.26 at 690 K was attained in PbSe(NaCl)4.5. This study provides a guideline for chemical doping to improve the thermoelectric properties of PbSe further and promote its applications.

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Section: Resultsmentioning

confidence: 64%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Preparation of Heavily Doped P-Type PbSe with High Thermoelectric Performance by the NaCl Salt-Assisted Approach

Shai

Ding

et al. 2023

Molecules

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“…5,6 Moreover, a large pool of competitive candidates possessing extraordinary ZT values are Pb-containing compounds. [7][8][9] The ideal strategy to mitigate environmental damage and related ecological complications caused by the toxicity of these materials is by the replacement of Pb with non-toxic elements. Similarly, solar cell materials demonstrating a remarkable power conversion efficiency (PCE) of 25% and above are frequently in the form of a PbI-based perovskite.…”

Section: Introductionmentioning

confidence: 99%

Prediction of stable silver selenide-based energy materials sustained by rubidium selenide alloying

et al. 2022

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Modeling the interaction of PbSe nanoparticles

Zakharov

Lutsenko

Markidonov

et al. 2021

J. Phys.: Conf. Ser.

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In this work, the interaction of two PbSe nanoparticles is studied by means of atomistic modeling within the framework of the molecular dynamics method. The considered model consisted of two nanoparticles, each of which contained 5398 atoms. The interaction between particles was described by means of the Leonardo-Jones pair potential supplemented by the Coulomb interaction. The paper considers the effect of temperature on the process of combining nanoparticles depending on the distance between them. Attention is paid to the deformation of PbSe particles. At the initial stage of model relaxation, diffusion processes occur along the surface of nanoparticles due to the presence of polarly charged (111) planes on the crystal surface. This process is accompanied by deformation of particles along the axis of mutual arrangement of PbSe. There is a tendency to an increase in deformation with increasing temperature. The tendency of increasing deformation with increasing distance between particles is characteristic. The presence of PbSe near the second particle leads to an increase in deformation with increasing temperature. The maximum deformation of the particles increased by 5%, compared to a single particle, where the deformation is due only to its own dipole moment.

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High performance in room temperature and thermoelectric properties of PbSe single crystal prepared by Pb-flux method

Cited by 3 publications

References 40 publications

Preparation of Heavily Doped P-Type PbSe with High Thermoelectric Performance by the NaCl Salt-Assisted Approach

Preparation of Heavily Doped P-Type PbSe with High Thermoelectric Performance by the NaCl Salt-Assisted Approach

Prediction of stable silver selenide-based energy materials sustained by rubidium selenide alloying

Modeling the interaction of PbSe nanoparticles

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