Physics – Condensed Matter – Materials Science
Scientific paper
2009-03-07
Nano Letters vol. 9 (5), 1850-1855 (March 31, 2009).
Physics
Condensed Matter
Materials Science
Scientific paper
10.1021/nl803835z
Excess heat generated in integrated circuits is one of the major problems of modern electronics. Surface phonon-polariton scattering is shown here to be the dominant mechanism for hot charge carrier energy dissipation in a nanotube device fabricated on a polar substrate, such as $SiO_2$. Using microscopic quantum models the Joule losses were calculated for the various energy dissipation channels as a function of the electric field, doping, and temperature. The polariton mechanism must be taken into account to obtain an accurate estimate of the effective thermal coupling of the non-suspended nanotube to the substrate, which was found to be 0.1-0.2 W/m.K even in the absence of the bare phononic thermal coupling.
Avouris Phaedon
Perebeinos Vasili
Petrov Alexey G.
Rotkin Slava V.
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