Synergistic Strategies to Boost Lead Telluride as Prospective Thermoelectrics

Yong Yu; Haijun Wu; Jiaqing He

doi:10.1007/978-3-030-45862-1_6

Synergistic Strategies to Boost Lead Telluride as Prospective Thermoelectrics

Yong Yu
, Haijun Wu
, Jiaqing He

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

1 Scopus citations

Abstract

Lead telluride PbTe is a typical mid-temperature thermoelectric (TE) material, which has been intensively studied to achieve higher TE performance. We summarize three strategies that have been successfully applied in PbTe-based TE materials. The first strategy is charge carriers concentration engineering to optimize electrical transport. The optimal hole concentration for p-type PbTe is equal to (3-40) × 10¹⁹ cm^-3, while for n-type PbTe, electron concentration is equal to (4-40) × 10¹⁸ cm^-3, which is one order of magnitude lower than p-type. The second strategy is band engineering to enhance Seebeck coefficient. This strategy comprises band convergence, DOS distortion, resonant state, band alignment, band flattening, and impurity level. The third strategy is structural-defect engineering to lower the lattice thermal conductivity. In this part, the defects are sorted by dimensions from three-dimension to zero-dimension. At the end of the chapter, we give conclusion and prospects toward the PbTe system.

Original language	English
Title of host publication	Thin Film and Flexible Thermoelectric Generators, Devices and Sensors
Publisher	Springer International Publishing
Pages	155-189
Number of pages	35
ISBN (Electronic)	9783030458621
ISBN (Print)	9783030458614
DOIs	https://doi.org/10.1007/978-3-030-45862-1_6
State	Published - 1 Jan 2021
Externally published	Yes

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10.1007/978-3-030-45862-1_6

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abstract = "Lead telluride PbTe is a typical mid-temperature thermoelectric (TE) material, which has been intensively studied to achieve higher TE performance. We summarize three strategies that have been successfully applied in PbTe-based TE materials. The first strategy is charge carriers concentration engineering to optimize electrical transport. The optimal hole concentration for p-type PbTe is equal to (3-40) × 1019 cm-3, while for n-type PbTe, electron concentration is equal to (4-40) × 1018 cm-3, which is one order of magnitude lower than p-type. The second strategy is band engineering to enhance Seebeck coefficient. This strategy comprises band convergence, DOS distortion, resonant state, band alignment, band flattening, and impurity level. The third strategy is structural-defect engineering to lower the lattice thermal conductivity. In this part, the defects are sorted by dimensions from three-dimension to zero-dimension. At the end of the chapter, we give conclusion and prospects toward the PbTe system.",

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AU - Yu, Yong

AU - Wu, Haijun

AU - He, Jiaqing

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Y1 - 2021/1/1

N2 - Lead telluride PbTe is a typical mid-temperature thermoelectric (TE) material, which has been intensively studied to achieve higher TE performance. We summarize three strategies that have been successfully applied in PbTe-based TE materials. The first strategy is charge carriers concentration engineering to optimize electrical transport. The optimal hole concentration for p-type PbTe is equal to (3-40) × 1019 cm-3, while for n-type PbTe, electron concentration is equal to (4-40) × 1018 cm-3, which is one order of magnitude lower than p-type. The second strategy is band engineering to enhance Seebeck coefficient. This strategy comprises band convergence, DOS distortion, resonant state, band alignment, band flattening, and impurity level. The third strategy is structural-defect engineering to lower the lattice thermal conductivity. In this part, the defects are sorted by dimensions from three-dimension to zero-dimension. At the end of the chapter, we give conclusion and prospects toward the PbTe system.

AB - Lead telluride PbTe is a typical mid-temperature thermoelectric (TE) material, which has been intensively studied to achieve higher TE performance. We summarize three strategies that have been successfully applied in PbTe-based TE materials. The first strategy is charge carriers concentration engineering to optimize electrical transport. The optimal hole concentration for p-type PbTe is equal to (3-40) × 1019 cm-3, while for n-type PbTe, electron concentration is equal to (4-40) × 1018 cm-3, which is one order of magnitude lower than p-type. The second strategy is band engineering to enhance Seebeck coefficient. This strategy comprises band convergence, DOS distortion, resonant state, band alignment, band flattening, and impurity level. The third strategy is structural-defect engineering to lower the lattice thermal conductivity. In this part, the defects are sorted by dimensions from three-dimension to zero-dimension. At the end of the chapter, we give conclusion and prospects toward the PbTe system.

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BT - Thin Film and Flexible Thermoelectric Generators, Devices and Sensors

PB - Springer International Publishing

ER -

Synergistic Strategies to Boost Lead Telluride as Prospective Thermoelectrics

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