Tunable properties of few-layer graphene-N-methylpyrrolidone hybrid structures

A few-layer graphene-based hybrid material with high thermal and chemical stability and reproducible and tunable electronic properties was fabricated by intercalation of N-methylpyrrolidone into a few-layer graphene combined with heat treatment. Depending on the process temperature, the obtained mat...

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Bibliographic Details
Published in:Nanotechnology 2012-08, Vol.23 (31), p.315601-1-6
Main Authors: Antonova, Irina V, Kotin, Igor A, Soots, Regina A, Volodin, Vladimir A, Prinz, Victor Ya
Format: Article
Language:English
Subjects:
Carbon
Electrical resistivity
Graphene
Nanocomposites
Nanomaterials
Nanostructure
Temperature dependence
Three dimensional
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Summary:A few-layer graphene-based hybrid material with high thermal and chemical stability and reproducible and tunable electronic properties was fabricated by intercalation of N-methylpyrrolidone into a few-layer graphene combined with heat treatment. Depending on the process temperature, the obtained material could be produced with the following properties: a broad range of resistivity values (six to seven orders of magnitude) in combination with a high carrier mobility, a tunable band-gap (from 0 up to 3-4 eV) and sp2 or sp3 hybridization of carbon atoms. The extremely strong step-like temperature dependence (within 10 °C) of its properties observed in the vicinity of two temperatures, 90 and 200 °C, seems to be important for various applications. The hybrid material opens viable routes to progress in the design of three-dimensional nanostructures.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/23/31/315601