Sridhar S, Ge L, Tiwary CS, Hart AC, Ozden S, Kalaga K, Lei S, Sridhar SV, Sinha RK, Harsh H, Kordas K, Ajayan PM, Vajtai R. Enhanced field emission properties from CNT arrays synthesized on Inconel superalloy.
ACS Appl Mater Interfaces 2014;
6:1986-1991. [PMID:
24417432 DOI:
10.1021/am405026y]
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Abstract
One of the most promising materials for fabricating cold cathodes for next generation high-performance flat panel devices is carbon nanotubes (CNTs). For this purpose, CNTs grown on metallic substrates are used to minimize contact resistance. In this report, we compare properties and field emission performance of CNTs grown via water assisted chemical vapor deposition using Inconel vs silicon (Si) substrates. Carbon nanotube forests grown on Inconel substrates are superior to the ones grown on silicon; low turn-on fields (∼1.5 V/μm), high current operation (∼100 mA/cm(2)) and very high local field amplification factors (up to ∼7300) were demonstrated, and these parameters are most beneficial for use in vacuum microelectronic applications.
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