Field-emission properties of aligned carbon nanotubes

Wei Kai Hong, Han Chang Shih, Shang Hua Tsai, Chen Tien Shu, Fu Gow Tarntair, Huang-Chung Cheng

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15 Scopus citations


Dense, well-separated, and aligned carbon nanotubes have been prepared via bias-enhanced microwave plasma chemical vapor deposition. The turn-on fields defined at the emission current density of 10 μA/cm2 are about 3.35 V/μm, 2.54 V/μm, and 3.54 V/μm, for the immersion times in PdCl2 of 1 min, 20 min, and 40 min, respectively. The corresponding emission current densities are about 0.97 mA/cm2, 4.5 mA/cm2, and 0.44 mA/cm2 at the electric field of 5 V/μm. The higher emission current obtained from the aligned carbon nanotubes for the immersion time of 20 min is ascribed to the denser and sharper nanotubes formed in this condition.

Original languageEnglish
Pages (from-to)L925-L928
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number9 A/B
StatePublished - 15 Sep 2000

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