Resistance and thermoelectric power of carbon fibers upon changing the conductivity type
- Autores: Ivanov D.1, Ivanov K.1, Uryupin O.2
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Afiliações:
- St. Petersburg State University of Industrial Technology and Design
- Ioffe Institute
- Edição: Volume 51, Nº 7 (2017)
- Páginas: 834-835
- Seção: XV International Conference “Thermoelectrics and Their Applications—2016”, St. Petersburg, November 15–16, 2016
- URL: https://journals.rcsi.science/1063-7826/article/view/200134
- DOI: https://doi.org/10.1134/S1063782617070156
- ID: 200134
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Resumo
Upon being subjected to pulsed current, carbon fiber changes the sign of its thermoelectric power from negative to positive. The conductivity activation energy for the initial n-type fiber is 60 meV, and that for a fiber modified to p-type is 16 meV. Fabric constituted by carbon fibers with a set of p–n junctions does not require switching plates. In vacuum or in an inert atmosphere, carbon fibers withstand heating up to 3500 K, which opens up the possibility for developing thermoelectric generators that operate at high temperature gradients.
Sobre autores
D. Ivanov
St. Petersburg State University of Industrial Technology and Design
Email: Kivanov@mail.ru
Rússia, St. Petersburg, 191186
K. Ivanov
St. Petersburg State University of Industrial Technology and Design
Autor responsável pela correspondência
Email: Kivanov@mail.ru
Rússia, St. Petersburg, 191186
O. Uryupin
Ioffe Institute
Email: Kivanov@mail.ru
Rússia, St. Petersburg, 194021