Enhanced Field Emission Properties from CNT Arrays Synthesized on Inconel Superalloy

Sridhar, S and Ge, L and Tiwary, CS and Hart, AC and Ozden, S and Kalaga, K and Lei, S and Sridhar, SV and Sinha, RK and Harsh, H and Kordas, K and Ajayan, PM and Vajtai, R (2014) Enhanced Field Emission Properties from CNT Arrays Synthesized on Inconel Superalloy. In: ACS APPLIED MATERIALS & INTERFACES, 6 (3). pp. 1986-1991.

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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 (similar to 1.5 V/mu m), high current operation (similar to 100 mA/cm(2)) and very high local field amplification factors (up to similar to 7300) were demonstrated, and these parameters are most beneficial for use in vacuum microelectronic applications.

Item Type:	Journal Article
Publication:	ACS APPLIED MATERIALS & INTERFACES
Publisher:	AMER CHEMICAL SOC
Additional Information:	copyright for this article belongs to AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Keywords:	carbon nanotube; water assisted CVD; adhesion; field emission; ohmic contact
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	26 Mar 2014 08:01
Last Modified:	26 Mar 2014 08:02
URI:	http://eprints.iisc.ac.in/id/eprint/48731

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