Effect of Pulsed Photon Treatment on the Mechanical Properties of Semiconductor Thermoelectric Legs, Based on Bi2Te3–Bi2Se3 Solid Solutions, and the Adhesion of Switching Layers

We carry out comparative studies of the phase composition, morphology, and hardness of semiconductor legs based on the n -type solid solution Bi 2 Te 3 −Bi 2 Se 3 , obtained by hot pressing, after surface modification (mechanical processing and pulsed photon treatment (PPT) with incoherent light). U...

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Veröffentlicht in:Surface investigation, x-ray, synchrotron and neutron techniques x-ray, synchrotron and neutron techniques, 2019-05, Vol.13 (3), p.371-377
Hauptverfasser: Belonogov, E. K., Dybov, V. A., Kostyuchenko, A. V., Kushev, S. B., Serikov, D. V., Soldatenko, S. A.
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container_title Surface investigation, x-ray, synchrotron and neutron techniques
container_volume 13
creator Belonogov, E. K.
Dybov, V. A.
Kostyuchenko, A. V.
Kushev, S. B.
Serikov, D. V.
Soldatenko, S. A.
description We carry out comparative studies of the phase composition, morphology, and hardness of semiconductor legs based on the n -type solid solution Bi 2 Te 3 −Bi 2 Se 3 , obtained by hot pressing, after surface modification (mechanical processing and pulsed photon treatment (PPT) with incoherent light). Using shear tests, we determine the adhesion of switching and barrier Mo–Ni layers on the modified surfaces of semiconductor legs. Pulsed photon treatment stimulates local recrystallization of the imperfect layer near the surface of samples of the Bi 2 Te 3 −Bi 2 Se 3 solid solution to a depth of 100−200 nm, which increases the hardness of the surface layers. It is shown that the mechanical polishing and subsequent pulsed photon treatment of thermoelectric legs increases the adhesion of the switching and barrier Mo–Ni layers by 3–4 times, which can contribute to the efficient and stable operation of a thermoelectric generator battery.
doi_str_mv 10.1134/S1027451019030054
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subjects Adhesion tests
Bismuth tellurides
Chemistry and Materials Science
Comparative studies
Hot pressing
Legs
Materials Science
Mechanical polishing
Mechanical properties
Molybdenum
Morphology
Nickel
Phase composition
Recrystallization
Shear tests
Solid solutions
Surface layers
Surfaces and Interfaces
Switching
Thermoelectric generators
Thermoelectricity
Thin Films
title Effect of Pulsed Photon Treatment on the Mechanical Properties of Semiconductor Thermoelectric Legs, Based on Bi2Te3–Bi2Se3 Solid Solutions, and the Adhesion of Switching Layers
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