Extruded materials for thermoelectric coolers

Иванова, Л. Д.; Петрова, Л. И.; Granatkina, Yu. V.; Zemskov, V. S.; Sokolov, O. B.; Skipidarov, S. Ya.; Duvankov, N.I.

doi:10.1134/s0020168508070030

Cited by 29 publications

(11 citation statements)

References 1 publication

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“…The layered van der Waals (vdW) chalcogenides, in particular, tellurides of the group 15 metals have beenextensively studied during the last years as prospective thermoelectric materials and topological insulator for energy conversion and spintronic applications [1][2][3]. Tuning the band electronic properties of these materials are of interesting from the point of view of their applications in real optoelectronic and spintronic devices.…”

Section: Introductionmentioning

confidence: 99%

SYNTHESIS AND CRYSTAL STRUCTURE OFA NEW 9P–TYPE LAYERED van der WAALSCOMPOUND SnBi4Te4

Orujlu¹,

Seidzade²,

Aliev³

et al. 2020

Chemical Problems

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Considering structural features of the already known tetradymite-like layered chalcogenide phases, we have attempt to synthesize a new mix-layered compound, SnBi 4 Te 4 . The newly synthesized alloy examined by means of differential thermal analysis, powder X-ray diffraction and scanning electron microscope techniques.The melting nature of the discovered phase is found to be incongruently at 831 K. The crystal structure of the SnBi 4 Te 4 was elucidated from powder pattern by Rietveld method. The determined crystal structure was found to derived from tetradymite type and featured by the alternation of theseven-layered (septuple) blocks of SnBi 2 Te 4 and bismuth bilayers. The result of this work, the existence of a new -SnBi 4 Te 4 compound in the Sn-Bi-Te ternary systemcan shed light for the incoming research works to search for similar phases in the other releated A IV -Bi-Te ( = , , ) systems.

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Section: Introductionmentioning

confidence: 99%

SYNTHESIS AND CRYSTAL STRUCTURE OFA NEW 9P–TYPE LAYERED van der WAALSCOMPOUND SnBi4Te4

Orujlu¹,

Seidzade²,

Aliev³

et al. 2020

Chemical Problems

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“…При выборе технологии изготовления материалов на основе Bi 2 Te 3 необходимо учитывать требования получения направленных поликристаллов, поскольку эти материалы обладают анизотропией электропроводности и теплопроводности из-за своей слоистой структуры [1,2]. Были изучены материалы на основе твердых растворов Bi 2 Te 3 −Sb 2 Te 3 p-типа проводимости Твердые растворы различных составов получали методом экструзии, который заключается в горячем выдавливании через фильеру [3,4]. Метод горячей экструзии состоял из нескольких этапов.…”

Section: изготовление образцовunclassified

“…Полученные прутки отжигали в атмосфере инертного газа. Исследовалась микроструктура поперечного сечения и боковой поверхности образцов после их травления в течение 20 с в 50%-м водном растворе HNO 3 .…”

Section: изготовление образцовunclassified

XVI Международная Конференция "Термоэлектрики И Их Применения --- 2018" (ISCTA 2018), Санкт-Петербург, 8-12 Октября 2018 Г. Новое Направление Применения Термоэлектрических Преобразователей Энергии

Дашевский¹,

Константинов²,

Скипидаров³

2019

Физика И Техника Полупроводников

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In southern countries, including European states, solar collectors for additional water-heating systems are widely used. However, the disadvantage of such systems is that a considerable proportion of solar energy cannot be used with increasing water temperature and dissipates into the environment. It is proposed to use waste heat at a high temperature, which is supplied to a thermoelectric generator (TEG) operating on the basis of a temperature difference between the hot water in the solar collector and cold water supplied to a radiator on the other TEG side. This is a new application of thermoelectric converters, in which the converter can act not only as a source of electrical energy but also as a source of low-potential heat coming from the radiator. The total conversion efficiency in such devices can reach 90%. It is shown that the use of p -type legs in a TEG with the cleavage planes of the legs parallel to the heat-flux direction instead of the conventional parallel orientation results in an increase in the thermoelectric efficiency by 25% on average in the temperature range of 100–300°C.

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“…Применение известных методов экструзии [4] к твердым растворам Bi−Sb не позволяет получить материал с высокими прочностными и термоэлектрическими характеристиками одновременно.…”

Section: Introductionunclassified

Эффективные кристаллы Bi-Sb для термоэлектрического охлаждения при температурах T&lesssim;180 K

Sidorenko¹,

Dashevskii²

2019

Физика И Техника Полупроводников

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Methods of extrusion are widely used in technology of thermoelectric (TE) materials manufacturing with high strength and good TE properties at temperatures above 200 K. The method of extrusion of Bi - Sb single crystals in the liquid environment under high hydrostatic pressure is considered. The construction of experimental equipment is presented. It was shown that presented method of extrusion allows preparing of polycrystalline material with high TE and improved strength properties at temperatures below 180 K.

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Extruded materials for thermoelectric coolers

Cited by 29 publications

References 1 publication

SYNTHESIS AND CRYSTAL STRUCTURE OFA NEW 9P–TYPE LAYERED van der WAALSCOMPOUND SnBi4Te4

SYNTHESIS AND CRYSTAL STRUCTURE OFA NEW 9P–TYPE LAYERED van der WAALSCOMPOUND SnBi4Te4

Эффективные кристаллы Bi-Sb для термоэлектрического охлаждения при температурах T&lesssim;180 K

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