Realizing enhanced thermoelectric performance in an n-type Mg<sub>3</sub>(Bi,Sb)<sub>2</sub>-based film

Bano, Sahiba; Peng, Ying; Aizawa, Takashi; Chetty, Raju; Mori, Takao

doi:10.1039/d3tc02611f

J. Mater. Chem. C

2023

DOI: 10.1039/d3tc02611f

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Realizing enhanced thermoelectric performance in an n-type Mg₃(Bi,Sb)₂-based film

Sahiba Bano,

Ying Peng,

Takashi Aizawa

et al.

Abstract: Zintl phase Mg3(Bi,Sb)2-based materials have garnered significant interest in recent time for their potential in room-temperature thermoelectric applications. Recently, bulk n-type Mg3(Bi,Sb)2 alloys materials with high thermoelectric performance have been...

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2024

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Cited by 5 publications

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High‐Performing Flexible Mg₃Bi₂ Thin‐Film Thermoelectrics

Hu,

Shi,

Cao

et al. 2024

Advanced Science

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With the advances in bulk Mg3Bi2, there is increasing interest in pursuing whether Mg3Bi2 can be fabricated into flexible thin films for wearable electronics to expand the practical applications. However, the development of fabrication processes for flexible Mg3Bi2 thin films and the effective enhancement of their thermoelectric performance remain underexplored. Here, magnetron sputtering and ex‐situ annealing techniques is used to fabricate flexible Mg3Bi2 thermoelectric thin films with a power factor of up to 1.59 µW cm−1 K−2 at 60 °C, ranking as the top value among all reported n‐type Mg3Bi2 thin films. Extensive characterizations show that ex‐situ annealing, and optimized sputtering processes allow precise control over film thickness. These techniques ensure high adhesion of the films to various substrates, resulting in excellent flexibility, with <10% performance degradation after 500 bending cycles with a radius of 5 mm. Furthermore, for the first time, flexible thermoelectric devices are fabricated with both p‐type and n‐type Mg3Bi2 legs, which achieve an output power of 0.17 nW and a power density of 1.67 µW cm−2 at a very low temperature difference of 2.5 °C, highlighting the practical application potential of the device.

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High‐Performing Flexible Mg₃Bi₂ Thin‐Film Thermoelectrics

Hu,

Shi,

Cao

et al. 2024

Advanced Science

View full text Add to dashboard Cite

show abstract

Mg3(Sb,Bi)2-based materials and devices rivaling bismuth telluride for thermoelectric power generation and cooling

Bano,

Chetty,

Babu

et al. 2024

Device

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High thermoelectric performance of n-type Mg3Bi2 films deposited by magnetron sputtering

Shao,

Zheng,

Dong

et al. 2024

Vacuum

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Realizing enhanced thermoelectric performance in an n-type Mg₃(Bi,Sb)₂-based film

Abstract: Zintl phase Mg3(Bi,Sb)2-based materials have garnered significant interest in recent time for their potential in room-temperature thermoelectric applications. Recently, bulk n-type Mg3(Bi,Sb)2 alloys materials with high thermoelectric performance have been...

Cited by 5 publications

References 45 publications

High‐Performing Flexible Mg₃Bi₂ Thin‐Film Thermoelectrics

High‐Performing Flexible Mg₃Bi₂ Thin‐Film Thermoelectrics

Mg3(Sb,Bi)2-based materials and devices rivaling bismuth telluride for thermoelectric power generation and cooling

High thermoelectric performance of n-type Mg3Bi2 films deposited by magnetron sputtering

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Realizing enhanced thermoelectric performance in an n-type Mg3(Bi,Sb)2-based film

Abstract: Zintl phase Mg3(Bi,Sb)2-based materials have garnered significant interest in recent time for their potential in room-temperature thermoelectric applications. Recently, bulk n-type Mg3(Bi,Sb)2 alloys materials with high thermoelectric performance have been...

Cited by 5 publications

References 45 publications

High‐Performing Flexible Mg3Bi2 Thin‐Film Thermoelectrics

High‐Performing Flexible Mg3Bi2 Thin‐Film Thermoelectrics

Mg3(Sb,Bi)2-based materials and devices rivaling bismuth telluride for thermoelectric power generation and cooling

High thermoelectric performance of n-type Mg3Bi2 films deposited by magnetron sputtering

Contact Info

Product

Resources

About

Realizing enhanced thermoelectric performance in an n-type Mg₃(Bi,Sb)₂-based film

High‐Performing Flexible Mg₃Bi₂ Thin‐Film Thermoelectrics

High‐Performing Flexible Mg₃Bi₂ Thin‐Film Thermoelectrics