Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

PECVD Synthesis and Thermoelectric Properties of Thin Films of Lead Chalcogenides (PbTe)1-x(PbS)x

Version 1 : Received: 30 April 2023 / Approved: 1 May 2023 / Online: 1 May 2023 (04:26:00 CEST)

A peer-reviewed article of this Preprint also exists.

Kuznetsov, Y.M.; Mochalov, L.A.; Dorokhin, M.V.; Fukina, D.G.; Kudryashov, M.A.; Kudryashova, Y.P.; Zdoroveyshchev, A.V.; Zdoroveyshchev, D.A.; Kalentyeva, I.L.; Kriukov, R.N. PECVD Synthesis and Thermoelectric Properties of Thin Films of Lead Chalcogenides (PbTe)1−x(PbS)x. Coatings 2023, 13, 1030. Kuznetsov, Y.M.; Mochalov, L.A.; Dorokhin, M.V.; Fukina, D.G.; Kudryashov, M.A.; Kudryashova, Y.P.; Zdoroveyshchev, A.V.; Zdoroveyshchev, D.A.; Kalentyeva, I.L.; Kriukov, R.N. PECVD Synthesis and Thermoelectric Properties of Thin Films of Lead Chalcogenides (PbTe)1−x(PbS)x. Coatings 2023, 13, 1030.

Abstract

Lead-based ternary chalcogenide thin films of the (PbTe)1-x(PbS)x system were obtained by plasma-enhanced chemical vapor deposition technique (PECVD) under conditions of a nonequilibrium low-temperature argon plasma of an RF discharge (40.68 MHz) at a reduced pressure (0.01 Torr). High-purity elements were directly used as starting materials – Pb, S and Te. Plasma-chemical synthesis was carried out on the surface of of c-sapphire and silicon substrate. The physicochemical properties of the films were studied by various analytical methods. The dependence of the Seebeck coefficient, resistivity, and power factor on the structural properties and composition has been studied. The thermoelectric characteristics were found to be dependent on the film composition. Upon the selection of optimal sulfur concentration one can increase the power factor as compared to single phase PbS ot PbTe films.

Keywords

lead chalcogenides; thin-film thermoelectric converters; inorganic synthesis; Seebeck coefficient; resistivity; thermoelectric figure of merit; power factor

Subject

Chemistry and Materials Science, Materials Science and Technology

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