Enhanced thermoelectric ZT in the tails of the Fermi distribution via electron filtering by nanoinclusions: Model electron transport in nanocomposites

Hosseini, S. Aria; Coleman, Devin; Bux, Sabah K.; Greaney, P. Alex; Mangolini, Lorenzo

doi:10.1103/physrevmaterials.6.075401

Cited by 1 publication

(1 citation statement)

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“…[12][13][14] Silicon carbide particles can be used as electron-scattering inclusions in silicon-based thermoelectric devices, improving their efficiency. [15] Titanium and zirconium nitride particles are a low-cost alternative to gold-and silver-based plasmonic materials. [16,17] Finally, amorphous silicon particles have recently been shown to have energetic characteristics that are superior to their crystalline counterpart.…”

Section: Introductionmentioning

confidence: 99%

Nonthermal plasma synthesis of silicon carbonitride

Herzberg

Mathaudhu

Mangolini

2023

Plasma Processes & Polymers

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The use of a low‐temperature plasma for the synthesis of amorphous silicon carbonitride (SiCN) nanoparticles enables the realization of sintered bulk samples with high thermal stability. Amorphous SiCN nanoparticles are produced from a mixture of silane, methane, and ammonia utilizing a mid‐pressure, radio‐frequency, continuous flow reactor. Particle characterization shows that the nanoparticles are largely amorphous with some crystalline silicon and silicon carbide domains <10 nm in size. Compositional tuning, controlled by varying the precursor flow rates, coupled with the uniform mixing of elements at the nanoscale, results in samples that resist crystallization even when sintered at temperatures as high as 2000°C. This study suggests that the low‐temperature plasma synthesis of nanoparticles has great potential to produce bulk structural materials for application in harsh environments.

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