Enhancing thermoelectric performance by Fermi level tuning and thermal conductivity degradation in (Ge(1−x)Bi(x))Te crystals

In this work, a high thermoelectric figure of merit, zT of 1.9 at 740 K is achieved in Ge(1−x)Bi(x)Te crystals through the concurrent of Seebeck coefficient enhancement and thermal conductivity reduction with Bi dopants. The substitution of Bi for Ge not only compensates the superfluous hole carrier...

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Published in:Sci Rep
Main Authors: Wei, Pai-Chun, Cai, Cheng-Xun, Hsing, Cheng-Rong, Wei, Ching-Ming, Yu, Shih-Hsun, Wu, Hsin-Jay, Chen, Cheng-Lung, Wei, Da-Hua, Nguyen, Duc-Long, Chou, Mitch M. C., Chen, Yang-Yuan
Format: Artigo
Language:Inglês
Published: Nature Publishing Group UK 2019
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Article
Online Access:https://ncbi.nlm.nih.gov/pmc/articles/PMC6565697/
https://ncbi.nlm.nih.gov/pubmed/31197195
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1038/s41598-019-45071-9
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