najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2016-7-6-919-924najo-770Research ArticlePHYSICSФИЗИКАMacroscopic thermoelectric efficiency of carbon nanocompositesEidelmanE. D.

26 Politekhnicheskaya, 194021 Saint Petersburg; 14 Professora Popova, 197376 Saint Petersburg

eidelman@mail.ioffe.ruMeilakhsA. P.

26 Politekhnicheskaya, 194021 Saint Petersburg

Ioffe Physical Technical Institute; Saint Petersburg State Chemical-Pharmaceutical AcademyRussian FederationIoffe Physical Technical InstituteRussian Federation20161308202576919924Copyright © Eidelman E.D., Meilakhs A.P., 20252025Eidelman E.D., Meilakhs A.P.Eidelman E.D., Meilakhs A.P.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/770

The subject of this study is the thermoelectric efficiency (Z) and the thermoelectric parameter (ZT) of carbon nanocomposites, namely, the structures consisting of graphite-like (gr) and diamond-like (d) regions made of sp2 and sp3 hybridized carbon atoms, respectively. The impact of heat transfer across the boundary between sp2 and sp3 areas is analyzed for the first time. It is shown that the interfacial thermal resistance (Kapitza resistance) is not lower than the thermal resistance in the macroscopic gr region. The influence of various factors on the Kapitza resistance is analyzed. The value of ZT ≈ 3.5 at room temperature, taking into account the interfacial thermal resistance, is significantly higher than it would be in gr films (ZT ≈ 0.75).

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The authors declare that there are no conflicts of interest present.