| Citation: |
Zhang Xinyue, Yao Ning, Wang Yingjian, Zhang Binglin. Field Emission from a Mixture of Amorphous Carbon and Carbon Nanotubes Films[J]. Journal of Semiconductors, 2008, In Press.
Zhang X Y, Yao N, Wang Y J, Zhang B L. Field Emission from a Mixture of Amorphous Carbon and Carbon Nanotubes Films[J]. J. Semicond., 2008, 29(8): 1484.
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Field Emission from a Mixture of Amorphous Carbon and Carbon Nanotubes Films
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Abstract
A mixture of amorphous carbon and carbon nanotubes films was synthesized on stainless steel plates by a microwave plasma enhanced chemical vapor deposition system.The source gases were hydrogen and methane with flow rates of 100 and 16sccm,respectively,with a total pressure of 5.0kPa.The surface morphology and the structure of the films were characterized by field emission scanning electron microscopy (SEM) and Raman scattering spectroscopy.Field emission properties of as-deposited film were measured in a vacuum room below 5E-5 Pa.The experimental results show that the initial turn-on field is 0.9V/μm;The current density is 4.0mA/cm2 and the emission sites are dense and uniform at an electric field of 3.7V/μm.These results indicate that such a mixture of amorphous carbon and carbon nanotubes films is a promising material for field emission applications. -
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