Synthesis of well-aligned thin multiwalled carbon nanotubes on the silicon substrate and their field emission properties | Zendy

Huajun Yuan | Zendy; Dong-Hoon Shin | Zendy; Bawl Kim | Zendy; Cheol Jin Lee | Zendy

Open Access

Synthesis of well-aligned thin multiwalled carbon nanotubes on the silicon substrate and their field emission properties

Author(s) -

Huajun Yuan,

Dong-Hoon Shin,

Bawl Kim,

Cheol Jin Lee

Publication year - 2011

Publication title -

carbon letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.38

H-Index - 18

eISSN - 2233-4998

pISSN - 1976-4251

DOI - 10.5714/cl.2011.12.4.218

Subject(s) - materials science , field electron emission , thin film , carbon nanotube , substrate (aquarium) , silicon , wafer , nanotechnology , chemical vapor deposition , transmission electron microscopy , chemical engineering , carbon fibers , analytical chemistry (journal) , composite material , optoelectronics , electron , organic chemistry , quantum mechanics , geology , composite number , engineering , oceanography , physics , chemistry

Well-aligned multi-walled carbon nanotubes (MWCNTs) were successfully synthesized by catalytic chemical vapor deposition using a hydrogen sulfide (H2S) additive onto Al/Fe thin film deposited on Si wafers. Transmission electron microscopy images indicated that the as-grown carbon products were thin MWCNTs with small outer diameters of less than 10 nm. H2S plays a key role in synthesizing thin MWCNTs with a large inside hollow core. The well-aligned thin MWCNTs showed a low turn-on voltage of about 1.1 V/μm at a current density of 0.1 μA/cm2 and a high emission current of about 1.0 mA/cm2 at a bias field of 2.3 V/μm. We suggest a possible growth mechanism for the well-aligned thin MWCNTs with a large inside hollow core.

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