Field emission from hybrid diamond-like carbon and carbon nanotube composite structures
H Zanin1, P W May, M H M O Hamanaka
1School of Chemistry, University of Bristol , Bristol BS8 1TS, United Kingdom.
Abstract:
A thin diamond-like carbon (DLC) film was deposited onto a densely packed "forest" of vertically aligned multiwalled carbon nanotubes (VACNT). DLC deposition caused the tips of the CNTs to clump together to form a microstructured surface. Field-emission tests of this new composite material show the typical low threshold voltages for carbon nanotube structures (2 V μm(-1)) but with greatly increased emission current, better stability, and longer lifetime.
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