Field emission from non-uniform carbon nanotube arrays |
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Authors: | Fernando F Dall'Agnol Daniel den Engelsen |
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Affiliation: | 1.Center for Information Technology Renato Archer CTI, Rod., D. Pedro I km 143.6, Amarais, Campinas, Sao Paulo 13069-901, Brazil |
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Abstract: | Regular arrays of carbon nanotubes (CNTs) are frequently used in studies on field emission. However, non-uniformities are always present like dispersions in height, radius, and position. In this report, we describe the effect of these non-uniformities in the overall emission current by simulation. We show that non-uniform arrays can be modeled as a perfect array multiplied by a factor that is a function of the CNTs spacing. |
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Keywords: | Non-uniform array Carbon nanotube array CNT array Field emitter array Field emitter morphology Field emission simulation |
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