Thermoelectric properties and cost optimization of spark plasma sintered n-type Si0.9Ge0.1 - Mg2Si nanocomposites

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DOI:
10.1016/j.scriptamat.2017.12.019
URI (для ссылок/цитирований):
https://www.sciencedirect.com/science/article/pii/S1359646217307194?via%3Dihub
https://elib.sfu-kras.ru/handle/2311/110900
Автор:
Andrey, Usenko
Dmitry, Moskovskikh
Andrey, Korotitskiy
Mikhail, Gorshenkov
Elena, Zakharova
Aleksandr, Fedorov
Yury, Parkhomenko
Vladimir, Khovaylo
Коллективный автор:
Институт инженерной физики и радиоэлектроники
Кафедра теоретической физики и волновых явлений
Дата:
2017-12
Журнал:
Scripta Materialia
Квартиль журнала в Scopus:
Q1
Квартиль журнала в Web of Science:
Q1
Библиографическое описание:
Andrey, Usenko. Thermoelectric properties and cost optimization of spark plasma sintered n-type Si0.9Ge0.1 - Mg2Si nanocomposites [Текст] / Usenko Andrey, Moskovskikh Dmitry, Korotitskiy Andrey, Gorshenkov Mikhail, Zakharova Elena, Fedorov Aleksandr, Parkhomenko Yury, Khovaylo Vladimir // Scripta Materialia. — 2017. — № 146. — С. 295-299
Аннотация:
We report on thermoelectric properties of low Ge content n-type Si0.9Ge0.1–Mg2Si nanocomposite. Introduction of the Mg2Si phase into a SiGe matrix resulted in a dramatic drop of the lattice thermal conductivity beyond the previously reported lowest limit for SiGe alloys due to intensification of phonon scattering on SiGe–Mg2Si grain boundaries. For a sample doped with 1 at.% of Mg2Si, the peak value of thermoelectric figure of merit ZT reached ~ 0.8 at 800 °C. Sintered nanocomposites still exhibit high thermoelectric performance while being almost two times cheaper than Si0.8Ge0.2.
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