Technical Physics Letters

, Volume 43, Issue 9, pp 790–793 | Cite as

Influence of hydrogen on the thermoelectric voltage signal in a Pt/WO x /6H-SiC/Ni/Pt layered structure

  • V. V. Zuev
  • S. N. Grigoriev
  • V. Yu. Fominski
  • M. A. Volosova
  • A. A. Soloviev
Article

Abstract

The possibility of detecting H2 by registering the thermal electromotive force signal, which arises between the surfaces of 6H-SiC plates with a thickness of 400 μm, is established. The working surface of the plates is modified by deposition of a WO x film and catalytic Pt. An ohmic contact (Ni/Pt) is created on the rear surface of the plate, and this surface is maintained at a stabilized temperature of 350°C. The temperature gradient through the plate thickness arises due to the cooling of the working surface with the air medium. The delivery of H2 into this medium up to a concentration of 2% gives rise to a 15-fold increase in the electric signal, which considerably exceeds the Pt/WO x /SiC/Ni/Pt system’s response registered in the usual way by measuring the current–voltage dependence. In this case, an additional power source for the registration of the thermal electromotive force is not required.

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. V. Zuev
    • 1
  • S. N. Grigoriev
    • 2
  • V. Yu. Fominski
    • 1
  • M. A. Volosova
    • 2
  • A. A. Soloviev
    • 1
  1. 1.National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)MoscowRussia
  2. 2.Moscow State Technological University STANKINMoscowRussia

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