Comparison of thermoelectric properties of nanostructured Mg2Si, FeSi2, SiGe, and nanocomposites of SiGe–Mg2Si, SiGe–FeSi2 | Zendy

Amin Nozariasbmarz | Zendy; Palash Roy | Zendy; Zahra Zamanipour | Zendy; J. Houston Dycus | Zendy; Matthew J. Cabral | Zendy; James M. LeBeau | Zendy; Jerzy S. Krasiński | Zendy; Daryoosh Vashaee | Zendy

Open Access

Comparison of thermoelectric properties of nanostructured Mg₂Si, FeSi₂, SiGe, and nanocomposites of SiGe–Mg₂Si, SiGe–FeSi₂

Author(s) -

Amin Nozariasbmarz,

Palash Roy,

Zahra Zamanipour,

J. Houston Dycus,

Matthew J. Cabral,

James M. LeBeau,

Jerzy S. Krasiński,

Daryoosh Vashaee

Publication year - 2016

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4966138

Subject(s) - materials science , silicide , nanocomposite , alloy , thermoelectric effect , silicon germanium , thermoelectric materials , electrical resistivity and conductivity , atmospheric temperature range , thermal conductivity , silicon , optoelectronics , metallurgy , nanotechnology , composite material , electrical engineering , physics , engineering , thermodynamics , meteorology

Thermoelectric properties of nanostructured FeSi2, Mg2Si, and SiGe are compared with their nanocomposites of SiGe–Mg2Si and SiGe–FeSi2. It was found that the addition of silicide nanoinclusions to SiGe alloy maintained or increased the power factor while further reduced the thermal conductivity compared to the nanostructured single-phase SiGe alloy. This resulted in ZT enhancement of Si0.88Ge0.12–FeSi2 by ∼30% over the broad temperature range of 500-950 °C compared to the conventional Si0.80Ge0.20 alloy. The Si0.88Ge0.12–Mg2Si nanocomposite showed constantly increasing ZT versus temperature up to 950 °C (highest measured temperature) reaching ZT ∼ 1.3. These results confirm the concept of silicide nanoparticle-in-SiGe-alloy proposed earlier by Mingo et al. [Nano Lett. 9, 711–715 (2009)]

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research