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Enhancing the Figure of Merit of Heavy-Band Thermoelectric Materials Through Hierarchical Phonon Scattering.


ABSTRACT: Hierarchical scattering is suggested as an effective strategy to enhance the figure of merit zT of heavy-band thermoelectric materials. Heavy-band FeNbSb half-Heusler system with intrinsically low carrier mean free path is demonstrated as a paradigm. An enhanced zT of 1.34 is obtained at 1150 K for the Fe1.05Nb0.75Ti0.25Sb compound with intentionally designed hierarchical scattering centers.

SUBMITTER: Fu C 

PROVIDER: S-EPMC5069587 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Enhancing the Figure of Merit of Heavy-Band Thermoelectric Materials Through Hierarchical Phonon Scattering.

Fu Chenguang C   Wu Haijun H   Liu Yintu Y   He Jiaqing J   Zhao Xinbing X   Zhu Tiejun T  

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20160315 8


<b>Hierarchical scattering</b> is suggested as an effective strategy to enhance the figure of merit <i>zT</i> of heavy-band thermoelectric materials. Heavy-band FeNbSb half-Heusler system with intrinsically low carrier mean free path is demonstrated as a paradigm. An enhanced <i>zT</i> of 1.34 is obtained at 1150 K for the Fe<sub>1.05</sub>Nb<sub>0.75</sub>Ti<sub>0.25</sub>Sb compound with intentionally designed hierarchical scattering centers. ...[more]

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