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
| Autor: | V. Dybov, S. A. Soldatenko, S. B. Kushev, A. Kostyuchenko, D. V. Serikov, E. K. Belonogov |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Recrystallization (geology) Materials science business.industry 02 engineering and technology 021001 nanoscience & nanotechnology Hot pressing 01 natural sciences Surfaces Coatings and Films Thermoelectric generator Semiconductor 0103 physical sciences Thermoelectric effect Optoelectronics Surface modification Thin film 0210 nano-technology business Solid solution |
| Zdroj: | Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques. 13:371-377 |
| ISSN: | 1819-7094 1027-4510 |
| Popis: | We carry out comparative studies of the phase composition, morphology, and hardness of semiconductor legs based on the n-type solid solution Bi2Te3−Bi2Se3, 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 Bi2Te3−Bi2Se3 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. |
| Databáze: | OpenAIRE |
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