Single-walled carbon nanotubes coated with ZnO by atomic layer deposition

Partha P. Pal, Evgenia Gilshteyn, Hua Jiang, Marina Timmermans, Antti Kaskela, Oleg V. Tolochko, Maarit Karppinen, Mikko Nisula, Esko I. Kauppinen, Albert G. Nasibulin

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    5 Citations (Scopus)

    Abstract

    The possibility of ZnO deposition on the surface of single-walled carbon nanotubes (SWCNTs) with the help of an atomic layer deposition (ALD) technique was successfully demonstrated. The utilization of pristine SWCNTs as a support resulted in a non-uniform deposition of ZnO in the form of nanoparticles. To achieve uniform ZnO coating, the SWCNTs first needed to be functionalized by treating the samples in a controlled ozone atmosphere. The uniformly ZnO coated SWCNTs were used to fabricate UV sensing devices. An UV irradiation of the ZnO coated samples turned them from hydrophobic to hydrophilic behaviour. Furthermore, thin films of the ZnO coated SWCNTs allowed us switch p-type field effect transistors made of pristine SWCNTs to have ambipolar characteristics.

    Original languageEnglish
    Article number485709
    JournalNanotechnology
    Volume27
    Issue number48
    DOIs
    Publication statusPublished - 4 Nov 2016

    Keywords

    • ALD
    • CNT
    • field-effect transistor
    • functionalization
    • ozone
    • single-walled carbon nanotube films
    • UV sensing

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