Surface morphology and field emission characteristics of carbon nanofiber films grown by chemical vapor deposition on alloy catalyst

Carbon nanofiber (CNF) films have been successfully grown on Pd-Se, Fe-Ni, and Ni-Cu alloy catalysts at low temperatures by a thermal chemical vapor deposition method. Among these alloy catalysts, Ni-Cu alloy catalyst was found to be most suitable for low temperature growth of CNF (400°C). Using Pd-...

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Bibliographic Details
Published in:Applied surface science 2003-05, Vol.212-213, p.383-387
Main Authors: Kamada, K, Ikuno, T, Takahashi, S, Oyama, T, Yamamoto, T, Kamizono, M, Ohkura, S, Honda, S, Katayama, M, Hirao, T, Oura, K
Format: Article
Language:English
Subjects:
Alloy catalyst
Carbon nanofiber
Carbon nanotube
Field emission
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Summary:Carbon nanofiber (CNF) films have been successfully grown on Pd-Se, Fe-Ni, and Ni-Cu alloy catalysts at low temperatures by a thermal chemical vapor deposition method. Among these alloy catalysts, Ni-Cu alloy catalyst was found to be most suitable for low temperature growth of CNF (400°C). Using Pd-Se and Fe-Ni alloy catalysts, CNFs were grown at the lowest temperature of 500°C. The CNFs grown using Pd-Se catalyst were found to have more defective structure than that obtained with the other catalysts, and exhibited excellent field emission property (threshold field is estimated about 1.1V/mm). It is likely that defects play a role as electron emission sites.
ISSN:0169-4332
1873-5584
DOI:10.1016/S0169-4332(03)00119-3