Patterned deposition and field emission properties of carbon nanotubes by electrophoresis

Multi-wall carbon nanotubes were deposited on the patterned silicon substrates using electrophoretic deposition. The surface images of carbon nanotubes on substrate were observed by scanning electron microscopy. Field emission properties have been tested with a diode structure in a vacuum chamber be...

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Bibliographic Details
Main Authors: Haifeng Zhao, Hang Song, Zhiming Li, Naikang Liu, Guang Yuan, Yixin Jin
Format: Conference Proceeding
Language:English
Subjects:
Carbon nanotubes
Chemical vapor deposition
Current density
Electrodes
Electrokinetics
Electron emission
Ocean temperature
Scanning electron microscopy
Silicon compounds
Surface morphology
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Summary:Multi-wall carbon nanotubes were deposited on the patterned silicon substrates using electrophoretic deposition. The surface images of carbon nanotubes on substrate were observed by scanning electron microscopy. Field emission properties have been tested with a diode structure in a vacuum chamber below 5/spl times/10/sup -4/ Pa. The emission area measured is 1.0mm. Emission current density up to 30mA/cm at an electric field of 8V//spl mu/m has been obtained. Patterned deposition of carbon nanotubes by electrophoresis is a potential method to prepare field emission arrays.
DOI:10.1109/IVESC.2004.1414176