Field emission studies of MWCNT-polystyrene composites

Bhatia, R and Ivaturi, S and Prasad, V (2019) Field emission studies of MWCNT-polystyrene composites. In: 63rd DAE Solid State Physics Symposium 2018, 18 - 22 December 2018, Haryana.

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Abstract

Polymer composite can be an alternative route for making filed emission cathodes as it addresses the issues such as injection of the electrons, and peeling off of the cathode during field emission. Since the composites can be made at room temperature by using low cost solution methods, the cost of fabrication for making field emission cathode can be minimized. However the transport and emission of electrons in polymer composites are the factors affecting the emission performance. Experimental results of field emission of multiwall carbon nanotube-polystyrene (MWCNT-PS) composites indicate at moderate weight fraction of MWCNT (0.15) the emission performance can be maximized. Both charge transport and the number of emission sites play important roles in obtaining field emission. At lower weight fractions (<0.15) charge transport is a major issue, at higher wt. fractions (>0.15) the screening effects due to the increase in number of emission sites dominate.

Item Type:	Conference Paper
Publication:	AIP Conference Proceedings
Publisher:	American Institute of Physics Inc.
Additional Information:	The copyright for this article belongs to American Institute of Physics Inc.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	07 Jan 2023 10:28
Last Modified:	07 Jan 2023 10:28
URI:	https://eprints.iisc.ac.in/id/eprint/78884

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