Direct Deposition of Bamboo-Like Carbon Nanotubes on Copper Substrates by Sulfur-Assisted HFCVD | Zendy

Sri Lakshmi Katar | Zendy; Adolfo González-Berríos | Zendy; Joel De Jesús | Zendy; Brad R. Weiner | Zendy; Gerardo Morell | Zendy

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Direct Deposition of Bamboo-Like Carbon Nanotubes on Copper Substrates by Sulfur-Assisted HFCVD

Author(s) -

Sri Lakshmi Katar,

Adolfo González-Berríos,

Joel De Jesús,

Brad R. Weiner,

Gerardo Morell

Publication year - 2008

Publication title -

journal of nanomaterials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.463

H-Index - 66

eISSN - 1687-4129

pISSN - 1687-4110

DOI - 10.1155/2008/515890

Subject(s) - materials science , raman spectroscopy , x ray photoelectron spectroscopy , microcrystalline , carbon nanotube , chemical vapor deposition , scanning electron microscope , transmission electron microscopy , field electron emission , substrate (aquarium) , carbon fibers , analytical chemistry (journal) , chemical engineering , nanotechnology , composite material , electron , composite number , crystallography , optics , chemistry , organic chemistry , physics , oceanography , quantum mechanics , geology , engineering

Films of bamboo-like carbon nanotubes (BCNTs) were grown directly on copper substrates by sulfur-assisted hot filament chemical vapor deposition (HFCVD). The effects of substrate temperature and growth time over the BCNT structure were investigated. The films were characterized by scanning electron microscopy (SEM), Raman spectroscopy (RS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and electron field emission (EFE) studies. SEM and Raman characterization indicate a transition from the growth of microcrystalline diamond to the growth of a dense entangled network of carbon nanotubes or fibers as the substrate temperature is increased from 400 to 900°C that is accounted for by the base growth model. TEM images show that the nanotubes have regular arrays of nanocavities. These BCNTs show good electron field emission properties as other carbon films

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