Secondary electron emission under electron bombardment from graphene nanoplatelets

• DOI: 10.1016/j.apsusc.2013.10.045
• Publication Date: 2013-10-18T13:01:42Z
• Authors: Isabel Montero; Lydya Aguilera; María E. Dávila; Valentin C. Nistor; Luis A. González; Luis Galán; David Raboso; R. Ferritto
• Keywords: Secondary emission; Secondary electrons; Electron beam processing; Carbon fibers; Amorphous carbon

Peer Reviewed<br/>We present novel strategies for obtaining materials with low secondary electron emission under electron beam irradiation for advanced technological applications. Apart from the promising low secondary electron emission yield (SEY) of amorphous carbon coatings deposited on rough surfaces, graphene nanoplatelets are shown to be very effective in reducing the SEY even over flat substrates. Here, we report very low SEY from coatings of graphene platelets exposed to the air, indicating a 60% reduction of the SEY respect to the uncoated flat surfaces. The shape of the SEY curve as a function of primary energy looks like the inverted image of a typical SEY curve. © 2013 Elsevier B.V.<br/>This work was supported by the European Space Agency (ESA) and MICIIN of Spain Projects No. AYA2009-14736-C02-01 and AYA2009-14736-C02-02.<br/>