Effects of Oxygen Interaction with PbTe Surface and Their Influence on Thermoelectric Material Properties

Authors I.V. Horichok1 , V.V. Prokopiv1, R.I. Zapukhlyak1, O.M. Matkivskyj1 , T.O. Semko1, I.O. Savelikhina2, T.O. Parashchuk3

1Vasyl Stefanyk Precarpathian National University, 57, Shevchenko Str., 76018 Ivano-Frankivsk, Ukraine

2Ivano-Frankivsk National Medical University, 2, Halytska Str., 76018 Ivano-Frankivsk, Ukraine

3The Institute of Advanced Manufacturing Technology, 37, Wroclawska Str., 30-011 Krakow, Poland

Issue Volume 10, Year 2018, Number 5
Dates Received 12 August 2018; revised manuscript received 24 October 2018; published online 29 October 2018
Citation I.V. Horichok, V.V. Prokopiv, R.I. Zapukhlyak, et al., J. Nano- Electron. Phys. 10 No 5, 05006 (2018)
DOI https://doi.org/10.21272/jnep.10(5).05006
PACS Number(s) 72.15.Jf, 61.72.up
Keywords Lead Telluride, Thermoelectrical parameters, Diffusion (11) , Surface oxidation.

The results of the study of thermoelectric material properties obtained by pressing the powder of lead telluride samples are presented. It is shown that an adequate model of pressed samples structure should take into account the presence of a near-surface layer, which formation is associated with the interaction of the material with atmospheric oxygen. The calculation of carrier mobility in the samples has been spent with considering the mechanisms of carrier dispersion on acoustic phonons and thermoelectronic emission.

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