Thermal conductivity of meso-porous germanium

Abstract : Thermal conductivity value of sponge-like meso-porous germanium (meso-PGe) layers measured by means of photoacoustic technique is reported. The room temperature thermal conductivity value is found to be equal to 0.6 W/(m K). The experimental results are in excellent agreement with molecular dynamic and Monte Carlo simulations. Both experiments and simulations show an important thermal conductivity reduction of the meso-PGe layers compared to the bulk Ge. The obtained results reveal meso-PGe as an interesting candidate for both thermoelectric and photovoltaic applications in which thermal transport is a really crucial issue.
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Mykola Isaiev, Sergii Tutashkonko, Valentin Jean, Konstantinos Termentzidis, Tetyana Nychyporuk, et al.. Thermal conductivity of meso-porous germanium. Applied Physics Letters, American Institute of Physics, 2014, 105 (3), 105 / 5p. ⟨10.1063/1.4891196⟩. ⟨hal-01432202⟩

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