Bond-strength engineering beyond mass fluctuation: Unraveling the dominant mechanism of lattice thermal conductivity suppression in neighboring-site doped β-FeSi₂ thermoelectrics

Shengnan Dai; Lu Gan; Yuting Li; Jie Ma; Chin-Wei Wang; Tōru Ishigaki; Jinyang Xi; Jiong Yang

doi:10.1039/d5ta03600c

January 1, 2025Journal of Materials Chemistry A

Bond-strength engineering beyond mass fluctuation: Unraveling the dominant mechanism of lattice thermal conductivity suppression in neighboring-site doped β-FeSi₂ thermoelectrics

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Key Points

Lattice thermal conductivity in β-FeSi2 is significantly reduced through doping with Ir, enhancing thermoelectric performance.
Experimental results indicate a novel mechanism at play when neighboring-site doping is applied, with measurable reductions in conductivity.
The analysis emphasizes the importance of understanding doping mechanisms for improving thermoelectric materials, particularly β-FeSi2.
Findings may enable future developments in thermoelectric technology, advancing energy efficiency applications.

Implication

Observational analysis reveals the role of doping in reducing lattice thermal conductivity in β-FeSi2 thermoelectrics, suggesting optimization strategies.

Abstract

Doping is the main strategy to optimize thermoelectric (TE) properties while reduce the lattice thermal conductivity ( κ L ), such as in the optimization of β -FeSi 2 . Experiment shows that Ir-doping β -FeSi 2 reduces...

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Cite This Study

Dai et al. (2025) studied this question.

synapsesocial.com/papers/68af63ddad7bf08b1eae3fbd https://doi.org/10.1039/d5ta03600c

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Bond-strength engineering beyond mass fluctuation: Unraveling the dominant mechanism of lattice thermal conductivity suppression in neighboring-site doped β-FeSi₂ thermoelectrics

Key Points

Implication

Abstract

Discussion

Cite This Study

Bond-strength engineering beyond mass fluctuation: Unraveling the dominant mechanism of lattice thermal conductivity suppression in neighboring-site doped β-FeSi₂ thermoelectrics

Key Points

Implication

Abstract

Discussion

Cite This Study

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