Enhanced N-Type Bismuth-Telluride-Based Thermoelectric Fibers via Thermal Drawing and Bridgman Annealing

N-type bismuth telluride (Bi(2)Te(3)) based thermoelectric (TE) fibers were fabricated by thermal drawing and Bridgman annealing, and the influence of Bridgman annealing on the TE properties of n-type Bi(2)Te(3)-based TE fibers was studied. The Bridgman annealing enhanced the electrical conductivity...

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Detalles Bibliográficos
Autores principales: Sun, Min, Zhang, Pengyu, Li, Qingmin, Tang, Guowu, Zhang, Ting, Chen, Dongdan, Qian, Qi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Communication
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9369927/
https://www.ncbi.nlm.nih.gov/pubmed/35955267
http://dx.doi.org/10.3390/ma15155331
Descripción
Sumario:N-type bismuth telluride (Bi(2)Te(3)) based thermoelectric (TE) fibers were fabricated by thermal drawing and Bridgman annealing, and the influence of Bridgman annealing on the TE properties of n-type Bi(2)Te(3)-based TE fibers was studied. The Bridgman annealing enhanced the electrical conductivity and Seebeck coefficient because of increasing crystalline orientation and decreasing detrimental elemental enrichment. The TE performance of n-type Bi(2)Te(3)-based TE fibers was improved significantly by enhancing the power factor. Hence the power factor increased from 0.14 to 0.93 mW/mK(2), and the figure-of-merit value is from 0.11 to 0.43 at ~300 K, respectively.

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