Analysis of Defect-Free Graphene Blocks in Nitrogen-Doped Bamboo-Like Carbon Nanotubes

Podyacheva, O.Y.; Suboch, A.N.; Bokova-Sirosh, S.N.; Romanenko, A.I.; Kibis, L.S.; Obraztsova, E.D.; Kuznetsov, V.L.

Авторы: Podyacheva Olga Yu, Suboch Arina N., Bokova-Sirosh Sofya N., Romanenko Anatoly I., Kibis Lidiya S., Obraztsova Elena D., Kuznetsov Vladimir L.
Журнал: Physica Status Solidi (B): Basic Research
Том: 255
Год издания: 2018
Издательство: John Wiley & Sons Ltd.
Местоположение издательства: United Kingdom
Первая страница: 1700253-1
Последняя страница: 1700253-6
DOI: 10.1002/pssb.201700253
Аннотация: The structure and electronic properties of the N-doped bamboo-like carbon nanotubes with different nitrogen content (N-CNTs) are studied by the use of transmission electron microscopy, electron energy loss spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy supplemented by measurements of the temperature dependence of conductivity. XPS data are used to estimate the content of nitrogen represented by pyridinic, pyrrolic, graphitic, and oxidized N species and encapsulated molecular nitrogen. The graphene blocks surrounded by borders containing hole defects and N-species are considered as building blocks of N-CNT walls. The intensity ratio of D, G, and 2D bands in Raman spectra and XPS data on the concentration of N-species are used to analyze the size of defect-free graphene blocks in N-CNTs. The size of such blocks depends on the N-defect content and is estimated to be 1–2nm. The increase of N-species content resulting in a decrease of graphene block size correlates with the decrease of current carrier concentration (nES) estimated within the Efros–Shklovskii model.
Добавил в систему: Образцова Елена Дмитриевна

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Analysis of Defect-Free Graphene Blocks in Nitrogen-Doped Bamboo-Like Carbon Nanotubesстатья

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