The influence of Dy concentration on the thermoelectric properties of n-type Dy-doped Bi2Te3 pellets prepared by hydrothermal and carbon burial sintering

Kristiantoro, Tony; Dedi,; Fauzia, Vivi

doi:10.1016/j.jpcs.2021.110241

Cited by 7 publications

(2 citation statements)

References 35 publications

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“…Until recently, much less data are known about magneto-transport and thermoelectric properties of doped Bi 2 Te 3 . 23 The robustness of TRS and the simultaneous increase in PF of 3D TI Bi 2 Te 3 upon Cobalt (Co) doping are reported in this paper. It should be mentioned that, despite a few findings, the overall consensus on acquiring the underlying physics between TPT and TE performance remains elusive.…”

Section: Introductionmentioning

confidence: 60%

“…Thus, to unleash the full potential of TI and concomitantly achieving enhancement in TE performance, TRS of TI should be preserved. Until recently, much less data are known about magneto‐transport and thermoelectric properties of doped Bi 2 Te 3 23 . The robustness of TRS and the simultaneous increase in PF of 3D TI Bi 2 Te 3 upon Cobalt (Co) doping are reported in this paper.…”

Section: Introductionmentioning

confidence: 81%

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Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi ₂ Te ₃

Singha

Das

Kulbashinskii

et al. 2022

Intl J of Energy Research

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We report the enhancement of electron mobility and power factor for 3D topological insulator Bi 2 Te 3 with Cobalt (Co) doping. Thermal variation of resistivity (ρ), thermopower (S), carrier concentration (n H ), magneto-resistance (MR), and magnetization measurements have been performed on synthesized Cobalt-doped n-type Bi 2 Te 3 , viz., Bi 2Àx Co x Te 3 (x = 0, 0.05, and 0.1) samples. Theoretical simulation of electrical and thermal transport parameters has been done in the frame of the Boltzmann equation approach and shows satisfactory agreement with experimental results. The thermoelectric performance, as estimated through power factor is found to increase with Co doping, with an enhancement of $47% is observed for Bi 1.9 Co 0.1 Te 3 sample. The positive linear MR and nearly cusp like behaviour at low field and low temperature confirms the presence of weak anti-localization (WAL) effects in pristine and Co-doped Bi 2 Te 3 samples. The field-dependent magnetization showing a cusp-like nature in the susceptibility data around zero field regions signifies the existence of topological surface state (TSS). MR along with magnetization data confirms the robustness of TSS with Co doping.

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Section: Introductionmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 81%

Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi ₂ Te ₃

Singha

Das

Kulbashinskii

et al. 2022

Intl J of Energy Research

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Stabilizing Distorted Ductile Semiconductors for Excellent Ductility and Thermoelectric Performance

Wang,

Chen,

Qiu

et al. 2024

Adv Funct Materials

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Element doping/alloying is a common strategy to tune the electrical and thermal transports of thermoelectric (TE) materials, but the doping/alloying limit of foreign elements in many TE materials is usually very low, bringing a great challenge to improve the TE performance. In this work, beyond the classic principle of “like dissolves like,” it is found that choosing the compound with a severely distorted lattice and diversified chemical bonding as the matrix also facilitates achieving a high doping/alloying limit. Taking ductile semiconductors as an example, this work shows that gold (Au) element is nearly immiscible in Ag2S and Ag2Te, but has a relatively high alloying limit in complex Ag2S0.5Te0.5 meta‐phase. Au in Ag2S0.5Te0.5 significantly decreases the carrier concentration and improves the TE performance, but scarcely changes the mechanical properties. Consequently, Ag1.99Au0.01S0.5Te0.5 demonstrates both a high figure‐or‐merit of 0.95 at 550 K and extraordinary room‐temperature ductility. This work offers an effective and general strategy to develop stabilized doped/alloyed TE materials.

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Dysprosium-Doping Influence on the Microstructure and Texturing of Bismuth-Telluride Thermoelectric Materials

Yaprintsev,

Ivanov

2023

Glass Ceram

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The influence of Dy concentration on the thermoelectric properties of n-type Dy-doped Bi2Te3 pellets prepared by hydrothermal and carbon burial sintering

Cited by 7 publications

References 35 publications

Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi ₂ Te ₃

Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi ₂ Te ₃

Stabilizing Distorted Ductile Semiconductors for Excellent Ductility and Thermoelectric Performance

Dysprosium-Doping Influence on the Microstructure and Texturing of Bismuth-Telluride Thermoelectric Materials

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The influence of Dy concentration on the thermoelectric properties of n-type Dy-doped Bi2Te3 pellets prepared by hydrothermal and carbon burial sintering

Cited by 7 publications

References 35 publications

Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi 2 Te 3

Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi 2 Te 3

Stabilizing Distorted Ductile Semiconductors for Excellent Ductility and Thermoelectric Performance

Dysprosium-Doping Influence on the Microstructure and Texturing of Bismuth-Telluride Thermoelectric Materials

Contact Info

Product

Resources

About

Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi ₂ Te ₃

Enhancement of electron mobility and thermoelectric power factor of cobalt‐doped n ‐type Bi ₂ Te ₃